Đáp án:

1. has already watched

- vì có already (dấu hiệu thì HTHT)

2. has written

- vì có yet (dấu hiệu thì HTHT)

3. have traveling

- vì có lately (dấu hiệu thì HTHT tiếp diễn)
4. haven't given

- vì có yet (Dấu hiệu thì HTHT)

5. hasn't seen

- vì có for 2 years (dấu hiệu thì HTHT)

6. have

- vì có three times (dấu hiệu thì HTHT) 

7. has rained

- vì có since (Dấu hiệu thì HTHT)

8. have met

- vì có this is the second time (dấu hiệu thì HTHT)

9. have walked

10. have you gotten

- vì có yet (dấu hiệu thì HTHT)

Cấu trúc: 

(+) S + has/have + Ved/V3....

(-) S + hasn't/haven't + Ved/v3

(?) Has/have + S + Ved/V3...?

=>
1. has already watched 
2. Has he written 
3. have travelled
4. have not given
5. has not seen
6. have been
7. has rained
8. have met
9. have walked
10. Have you got
Thì HTHT
(+) S have/has V3/ed
(-) S have/has not V3/ed
(?) Have/Has S V3/ed?