新概念英语第一册自学导读 Lessons131-132(2)

6  I'm not sure. He may be the boss.

7  I'm not sure. She may be twenty-one.

8  I'm not sure. They may have been seven.

9  I'm not sure. He may have been over eighty.

10  I'm not sure. She may have been under fifty.

11  I'm not sure. It may be the 16th today.

12  I'm not sure. It may have been Wednesday yesterday.

13  I'm not sure. It may be the 20th today.

14  I'm not sure. It may be expensive.

15  I'm not sure. It may have been difficult.

16  I'm not sure. She may have been young.

17  I'm not sure. He may have been tired.

18  I'm not sure. They may be watching television.

19  I'm not sure. She may have been looking for a new job.

20  I'm not sure. They may be standing.