Ответ:

1)

1.There were a lot of people at the concert last night.

2.Have you just arrived?

3.I have never seen a robot

2)

1)was

2)lived

3)made

4) went

5)met

6) asked

7)ate

8) came

9)killed

10)were

3)

1. We did our homework yesterday.

2. They did not sing songs at the last party.

3. Have you heard the story of ghosts?