1. I have answered
2. Have you found
3. haven't
4. left
5. has already gone
6.have you prepared for the test yet?
7. have
8. I have just finished
9. did
10.took
11. I haven't walked the dog yet
12. I have already done it
<span>Отправил телепрограмму по почте:sent <span>by mail</span></span>