15, wags; sees

16, were (you) doing; rang

17, have (never) seen

18, didn’t see

19, got

20, will leave; knows

21, was playing; arrived

22, will come; see

23, will come; Have (you) been

24, will come

25, will you spend

26, blooms

27, have not lived

28, will never forget; have just told

29, are preparing

30, stayed; rode; had borrowed

31, told; had visited

32, has worked

33, worked

34, build; fly

35, have lost; Can

36, hasn’t smoked

37, arrived; had just gone

38, have been

39, Have (you) received

40, joined; were

41, Will (you) remember; will forget

42, had studied

43, wrote

44, left; haven’t heard

45, Did (you) speak; haven’t seen; can’t; saw

46, were playing

47, discovered

48, will have finished

49, will have lived

50, did (your father) die; don’t know; died

 

(Các câu trên đề mờ quá.)