1. Have you ever worked
2.) I worked
3.) I have been
4.) She has lost
5.) did Betfoven compose
6.) Did you have
7.) Have you seen
8.) He hasn't had, has come
9.) She has changed
10.) I have seen
11.) originated
12.) has already wone
13.) built
14.) haven't found
15.) have never eaten
16.) was
17.) took
18.) appeared