Ответ:

Task 1 :

1 - have you had

2 - has been waiting

3 - has been

4 - 've asked

5 - have you tried

6 - have you known

7 - have you been studying

Task 2 :

1 - since

2 - has just finished

3 - has made

4 - has known

5 - for

6 - since

7 - has never made

8 - has been looking