1. watched ( last week dùng QKĐ)

2.has lived ( sine dùng HTHT )

3.haven't seen /got ( công thức "HTHT+since+QKĐ)

4.saw/ was washing 

5.hasn't decided ( yet dùng HTHT)

6.has worked (for thirsty years dùng HTHT)

7.has been ( chỉ trải nghiệm dùng HTHT)

8.is baking ( at the moment dùng HTTD)

9.has finished

10. will be ( có tomorrow)

11.was( có yesterday)

12.saved/had bought 

13.met

14.came/was watching

15.haven't smoked (since dùng HTHT)

16.has played( so far dùng HTHT)

17.give

18.

19.will be watching

20.is always breaking 

                                                               Good luck!!

1. watched

last week → QKĐ

2. has lived

since → HTHT

3. haven't seen, got

HTHT + since + QKĐ

4. saw, was washing

Hành động đang diễn ra trong quá khứ → QKTD

Hành động chen vào → QKĐ

5. hasn't decided

yet → HTHT

6. has worked

for + khoảng thời gian → HTHT

7. has been

three times → HTHT

8. is baking

at the moment → HTTD

9. will be finishing

By this time tomorrow → TLTD

10. will be

tomorrow → TLĐ

11. were

yesterday → QKĐ

12. had saved, bought

QKHT + before + QKĐ

13. met

last month → QKĐ

14. came, is watching

Hành động đang diễn ra trong quá khứ → QKTD

Hành động chen vào → QKĐ

15. haven't smoked

since → HTHT

16. has played

so far → HTHT

17. give

always → HTĐ

18. consists

Điều hiển nhiên → HTĐ

19. was watching

At 8 o'clock this evening → QKTD

20. always breaks

always → HTĐ