Complete the sentences with a verb in the correct form

1. I've lost one of my gloves. I must have dropped it somewhere.

2. They haven't lived here for long. They can't know many people.

3. Ted isn't at work today. He must --- ill.

4. Ted wasn't at work last week. He must --- ill.

5. (The doorbell rings) I wonder who that is. It can't --- Mary. She's still at work at this time.

6. Carol knows a lot about films. She must --- to the cinema a lot.

7. Look. Jack is putting on his hat and coat. He must --- out.

8. I left my bike outside the house last night and this morning it isn't there any more. Somebody must --- it.

9. Ann was in a very difficult situation. It can't --- easy for her.

10. There is a man walking behind us. He has been walking behind us for the last 20 minutes. He must --- us.

Read the situations and use the words in brackets to write sentences with must have and can't have.

1. The phone rang but I didn't hear it. (I/asleep)

_I must have been asleep._

2. Jane walked past me without speaking. (she/see/me)

_She can't have seen me._

3. The jacket you bought is very good quality. (it/very expensive)

4. I haven't seen the people next door for ages. (they/go away)

5. I can't find my umbrella. (I/leave/it in the restaurant last night)

6. Don passed the exam without studying for it. (the exam/very difficult)

7. She knew everything about our plans. (she/listen/to our conversation)

8. Fiona did the opposite of what I asked her to do. (she/understand/what I said)

9. When I woke up this morning, the light was on. (I/forget/to turn it off)

10. The lights were red but the car didn't stop. (the driver I see/the red light)

11. I was woken up in the middle of the night by the noise next door. (the neighbours/have/a party)