1 C

2 B

3 A

4 B

6 A

Đề bài là gì em ơi

36 keeps - has kept

37 are always forgetting - forgot - have forgotten

38 are always making - have made - made

39 spends - spent - has spent - knew

40 drinks - drank - has drunk

31 gave - gives

32 did - was - does - has just done

33 have been standing - stand - stood

34 take - took - haven't taken

35 catches - caught - has caught

26 brings - brought - has brought

27 have lost - have lost - has never lost

28 rang - answered - rings - is ringing - wants

29 have already bought - bought - buy

30 sell - sold - have sold

21 have never eaten - ate

22 doesn't speak - spoke - haven't spoken - speaks

23 teaches - taught - has just taught

24 has never broken - has broken - knew

25 leave - broke - left - have left - broke

16 felt - feels

17 went - got - rained - is not - has gone

18 reads - has - read - have you read

19 comes - came - was

20 tells - told - has told

11 doesn't drink - drank - has drunk

12 was - didn't give - went - gave - have given - started

13 sold - has sold

14 heard - have you ever heard

15 has known - doesn't know - knew

6 got - had died

7 had done - saw

8 thanked - had done

9 was - had hurt

10 had gone - sat - rested

Ex6

1 went - had finished

2 arrived - had already gone

3 had left - went - switched

4 found - had just left

5 went - had done