1. Can it (be) so late now? 2. Can he (tell) the truth then? 3. Surely it can't (be) Jim. I know him quite well. 4; But she can't (say) it. I am sure she didn't mean it. 5. I'll try to do it myself. It can't (be) so difficult after all. 6. Who told you about it? You can't (know) about it before. 7.Could it (be) a joke? She felt rather hurt. 18. You can't (see) him at the meeting. He was ill then. 9. He can't (forget) your address, he has visited you several times. 

Modal verbs are followed by an infinitive without to! У всіх випадках інфінітив, инфинитив.

1. Can it be  so late now?

2. Can he tell the truth then?

3. Surely it can't be Jim. I know him quite well.

4; But she can't say it. I am sure she didn't mean it.

5. I'll try to do it myself. It can't be so difficult after all.

6. Who told you about it? You can't know about it before.

7. Could it be a joke? She felt rather hurt.

8. You can't see him at the meeting. He was ill then.

9. He can't forget your address, he has visited you several times.