Study the examples. Then, rewrite the sentences using the modals in bold.
y?
<.
He must have left by now. (I'm sure he left.)
They are late. They may/might have lost their way
(It was possible.)
He can't have eaten the whole cake. (I'm sure he
didn't do it.)
You should have booked a table. (but you didn't.)
n.
?
1 I'm sure she didn't do the shopping. (CAN'T)
2 I'm sure Mum bought us some doughnuts.
(MUST)
cake for his birthday
to.​

Exercise 3. Complete the following sentences with I think I’ll … or

I don’t think I’ll …

Example: It’s hot. You decide to open the window. — I think, I’ll open the

window. It’s snowing heavily. You decide not to go out. — I don’t think I’ll go out.

1. You feel a bit hungry. You decide to have something to eat.

2. You don’t know Ken’s mobile telephone number. You decide to phone him

at work.

3. Bill is very lazy. He isn’t studying hard enough to get ready for his exams.

You are sure he’s going to fail them.

4. A friend of yours offers you a lift in his car, but you decide to walk.

5. It’s cold and windy outside. You decide not to go jogging.

6. You are not keen on computer games, but a friend of yours offers to play a

game. You don’t want to.

7. You are very tired. You decide to go to bed early.

8. You are in a hurry to catch the 8.15 train to the suburbs of Moscow. You

decide to take a taxi.

9. Your travel agency offers you a boat trip. You are afraid to be seasick. You

decide not to go.

10. Your shoulder bag is too heavy. You decide to leave out some items.

Exercise 4. Write questions do you think will ?

The girls couldn't carry the box because it was too heavy.

2. I don't wear this jacket in winter because it is not warm enough.

3. Three people can't sit on the back seat because it is not wide enough.

4. We couldn't read the text because it was too difficult.

5. She can't wear the skirt because it is not long enough.

6. You can't use this water because it is not clean enough.

7. He can't drive a car because he is too young.

8. They can't win the game because they are too slow.

9. We can't walk to the market because it is too far-away.

10. The little puppy can't do this trick because it is not clever enough.