Casa ESL · A2 Elementary · Teacher's Resource
Answer Key Booklet
All 20 units · Steps 1 & 2 · For teacher use only. Do not distribute to students.
Step 1 — Units 1–15
Unit 01
Daily Routines
Exercise 11. starts · 2. catches · 3. studies · 4. goes · 5. opens
Exercise 21. set an alarm → programme a device to wake you at a certain time · 2. commute to work → travel regularly between home and the office · 3. skip breakfast → not eat the morning meal · 4. be in a rush → need to move or act quickly · 5. wind down → slowly relax at the end of the day
Reading1. Her shift starts at eight o'clock. · 2. She goes to a yoga class after work.
Unit 02
Talking About the Past
Exercise 11. visited · 2. cooked · 3. didn't finish · 4. Did / enjoy · 5. stayed
Exercise 21. locked · 2. waited · 3. Did
Reading1. They went to a food market in the city centre. · 2. They walked along the canal and stopped at a coffee shop.
Unit 03
Irregular Past Verbs
Exercise 11. bought · 2. saw · 3. went · 4. came · 5. took
Exercise 21. go → went · 2. buy → bought · 3. drive → drove · 4. spend → spent · 5. eat → ate
Reading1. They hiked a trail through a pine forest. · 2. They bought local honey and cheese.
Unit 04
Making Plans
Exercise 11. am going to start · 2. is not going to come · 3. Are / going to travel · 4. are going to rent · 5. is going to visit
Exercise 21. is going to · 2. Are · 3. isn't
Reading1. He is going to finish his online photography course. · 2. Because they want to stay flexible.
Unit 05
Abilities & Skills
Exercise 11. can / can't · 2. Can · 3. can · 4. can't · 5. can
Exercise 21. A doctor → can help sick people get better · 2. A translator → can speak and write in two languages · 3. A pilot → can fly a plane · 4. A chef → can cook food for many people · 5. An artist → can draw and paint pictures
Reading1. He can draw detailed portraits. · 2. He can't sing.
Unit 06
Around the Neighbourhood
Exercise 11. straight ahead · 2. between · 3. opposite · 4. past · 5. next to
Exercise 21. Turn right at the lights → change direction to the east/right side · 2. Take the first left → go into the next road on the left side · 3. It's on your right → the building is to your right as you walk · 4. You can't miss it → it is very easy to see or find · 5. It's about five minutes on foot → walking there takes approximately five minutes
Reading1. The supermarket is next to the pharmacy. · 2. It is between the bookshop and the florist on Market Avenue.
Unit 07
At the Restaurant
Exercise 11. Would / like · 2. would like · 3. would / like · 4. would like · 5. would like
Exercise 21. Could I see the menu? → You have just sat down and haven't ordered yet. · 2. Is there a table for two? → You arrive without a reservation. · 3. What do you recommend? → You are not sure what to choose. · 4. Could we have the bill? → You have finished your meal and want to pay. · 5. Is this dish spicy? → You want to know about the ingredients.
Reading1. The writer had the tomato bruschetta. · 2. They were too full.
Unit 08
Describing People
Exercise 11. more interesting · 2. faster · 3. better · 4. noisier · 5. more patient
Exercise 21. bigger · 2. simpler · 3. worse
Reading1. Marcus is taller and more athletic than Felix. · 2. Felix paints, plays guitar, and writes short stories.
Unit 09
The Best Places
Exercise 11. the longest · 2. the hottest · 3. the most talented · 4. the worst · 5. the most beautiful
Exercise 21. The Nile → the longest river in Africa · 2. Vatican City → the smallest country in the world · 3. Siberia → one of the coldest regions on Earth · 4. New York City → one of the most densely populated cities in the USA · 5. The Great Barrier Reef → the largest coral reef system in the world
Reading1. It was visiting Machu Picchu at sunrise. · 2. The altitude made the first two days the hardest physically.
Unit 10
Shopping & Prices
Exercise 11. How much · 2. How many · 3. How much · 4. How many · 5. How much
Exercise 21. much · 2. many · 3. much
Reading1. It cost forty euros. · 2. The writer got four glasses for only twelve euros.
Unit 11
Work & Routines
Exercise 11. I am always tired on Monday mornings. · 2. She usually checks her messages before bed. · 3. They are never late for team meetings. · 4. He sometimes travels to the head office. · 5. We often work overtime during the busy season.
Exercise 21. always → 100% of the time · 2. usually → about 80% of the time · 3. sometimes → about 50% of the time · 4. rarely → about 10% of the time · 5. never → 0% of the time
Reading1. The writer usually starts work at eight thirty. · 2. The writer sometimes finds it harder to concentrate at home.
Unit 12
Travel & Transport
Exercise 11. are boarding · 2. am not sitting · 3. Is / stopping · 4. is reading / listening · 5. are not travelling
Exercise 21. takes / is taking · 2. am going · 3. leave
Reading1. Their flight is delayed by two hours. · 2. They are drinking coffee and writing a message.
Unit 13
Health & Appointments
Exercise 11. shouldn't · 2. should · 3. Should · 4. shouldn't · 5. should
Exercise 21. You have a high fever → You should drink fluids and rest. · 2. You have a bad cough → You shouldn't smoke and should see a doctor if it continues. · 3. You have a sprained ankle → You should ice it and avoid walking on it. · 4. You feel very stressed → You should take breaks and consider speaking to someone. · 5. You have a stomach ache → You shouldn't eat rich food and should drink herbal tea.
Reading1. The doctor said it was a throat infection. · 2. She said the writer shouldn't go to work for two days.
Unit 14
Weather & Clothes
Exercise 11. is / is snowing · 2. wears / is carrying · 3. says · 4. is blowing · 5. don't like
Exercise 21. wears / is wearing · 2. is · 3. are / wearing
Reading1. It is hot and humid, usually around thirty-two degrees. · 2. The writer is wearing a light t-shirt they bought that morning.
Unit 15
A2 Review
Exercise 11. goes / is resting · 2. can't / have · 3. best · 4. visited · 5. shouldn't
Exercise 21. you · 2. like · 3. much
Reading1. They can now describe routines, talk about the past, and make plans. Their speaking is more confident and they make fewer mistakes. · 2. They should practise listening more.
Step 2 — Units 16–20
Unit 16
Telling Stories
Exercise 11. was reading / knocked · 2. was driving / went · 3. were having / cut · 4. wasn't looking / tripped · 5. were / doing / started
Exercise 21. was sleeping · 2. were standing · 3. lost / was trying
Reading1. The writer was sitting on the beach reading a book. · 2. A gust of wind knocked his tray of drinks to the ground.
Unit 17
Connecting Ideas
Exercise 11. but · 2. so · 3. because · 4. Although · 5. and
Exercise 21. She loves cooking → but she never has time to do it. · 2. He missed the flight → because he arrived at the wrong terminal. · 3. The hotel was expensive → so we looked for a cheaper one nearby. · 4. Although she was nervous → she gave a great presentation. · 5. I enjoy running → and I try to go three times a week.
Reading1. Because cities offer more job opportunities and entertainment. · 2. The writer sometimes misses the silence of the mountains.
Unit 18
Making Requests
Exercise 11. Could you open the door? · 2. Would you mind lowering your voice? · 3. Could you pass me the salt? · 4. Would you mind repeating that? · 5. Could you explain this to me?
Exercise 21. Could you help me with this? → Of course — what do you need? · 2. Would you mind not smoking here? → No problem at all — I'll go outside. · 3. Could I leave ten minutes early today? → I'm afraid that's not possible today — we have a meeting. · 4. Would you mind speaking more slowly? → Not at all — sorry about that. · 5. Could you forward me that email? → Sure, I'll send it right now.
Reading1. Yuki is asking for an extension on a research essay. · 2. Yuki has been unwell and unable to complete the work.
Unit 19
Experiences & Adventures
Exercise 11. Have / seen · 2. have / eaten · 3. has visited · 4. Has / lived · 5. have / stayed
Exercise 21. Have you ever tried bungee jumping? → No, never — I am terrified of heights. · 2. Have you ever lived in another country? → Yes, I lived in Korea for two years. · 3. Has she ever cooked a full dinner for ten people? → Yes, she did it for her parents' anniversary. · 4. Have they ever met a famous person? → Yes, they met a famous footballer at the airport. · 5. Have you ever got lost in a foreign city? → Yes, in Istanbul — it was actually quite fun.
Reading1. No, he has never flown business class. · 2. He is eighty-one and has just booked a trip to Iceland.
Unit 20
Looking Ahead
Exercise 11. is going to rain · 2. will change · 3. 'll call · 4. isn't going to come · 5. will still
Exercise 21. 'll · 2. is going to · 3. will
Reading1. The writer thinks the biggest change will be in how people work. · 2. Some jobs will disappear but new ones will appear.