1

The film starts at 10 o'clock and you mustn't be late, because you have our tickets.

To be

2

I needn't have cooked a meal last night because we went out and the food was uneaten.

Not cook

3

You baked a lot of cakes. I think you must have been expecting us.

Expect

4

Something must have happened to him. He promised to be here two hours ago.

Happen

5

They must be hungry. They haven't eaten since morning.

To be

6

I called you yesterday, but you didn't answer. You must have been sleeping.

Sleep

7

- Where is she now?

- She must be taking her final exam.

Take

8

Don't panic! We can't miss our plane, we have plenty of time.

Miss

9

I didn't need to do the washing because I knew they had already washed everything.

Do

10

Your handwriting must be clear otherwise it is not possible to read your papers.

To be

11

The alarm clock went off and I had to get up.

Get up

12

He through he had lost the key and he kicked the door down. He needn't have done it because the key was in his pocket.

Do

13

Someone is calling. It can't be Ann, she's having a lecture now.

To be

14

We had enough foreign currency left, so I didn't need to buy any more.

Not buy

15

We mustn't be late for the train or we'll miss the meeting.

To be

16

I must be very careful not to upset him.

To be

17

 I enjoy parties unless I have to make speeches.

Make

18

Bill has just left the Army. He doesn't need to wear a uniform.

Wear

19

The doctor says that I mustn't get out of bed.

Get out

20

There is nobody in. They must have gone shopping.

Go