Es 37 pag 237

1. correct

2. … will have to…

3. correct

4. … you have to invite

5. correct

6. … we don’t have to…

7. don’t have to

8. don’t have to

Es 38 pag 237

1. don’t have to go

2. has to have

3. Does Shelley has to bring

4. have to worry

5. have to call

6. have to take

7. has to study

8. have to get up

Es 39 pag 237

1. have to

2. has to

3. had to

4. don’t have to

5. will have to

6. mustn’t

7. must

8. must, don’t have to

Es 40 pag 237

1. You must be silent, you mustn’t use the phone, you don’t have to buy the books

2. You must pay the food you order, you mustn’t enter in the kitchen, you don’t have to prepare the food

3. You must take a beach umbrella, you mustn’t annoy the other people, you don’t have to buy the food.

4. You must py the ticket, you mustn’t smoke, you don’t have stay in your seat

5. You must pay the ticket, you mustn’t be loud, you don’t have to take some food

6. You must pay the ticket, you mustn’t keep a bottle of water with you, you don’t have to be quiet

Es 41 pag 237

1. Even if the exercize is difficult, you must try to do it!

2. We have to send the reciept again

3. I want to win the race and I must train a lot to win!

4. You must appear self confident when you speak to the costumers!

5. Don’t worry, you don’t have to pay the admission charges in advance

6. You mustn’t answear in that way! If you do it again I will have to tell to your parents!

7. Don’t exagerate! If you go to London you won’t have to walk under the rain every day!

8. A: Oh no! We have to water all the plants of your grandfather? B: Yes… he left yesterday and he will comme back the next Saturday!