1, have known
2, Have you seen; have been looking; haven’t seen
3, will get
4, died
5, have been; hasn’t been
6, happened
7, haven’t worked; must work
8, Has Mr. Smith been; moved
9, came; was; Did you see
10, Will you come
11, plays
12, got; had studied
13, has been; hasn’t played
14, Have you ever tried
15, is playing
16, have just finished
17, have known
18, did you get; got