81 wwrote
82 ate
83 called
84 are going to plant
86 watched - did
87 went - were gaving
88 wasn't drving - happened
89 will leave
90haven't lived
91 will sit
92 am redecorating
93 haven't received - lefft
94 have given
95 worked
96had done
97 will write
98helps
99 will work
100 will wait - comes

31 have studied
32 are working
33 didn't listen
34 is playing
35 had finished
36 was buying - had saved
37 got - had already start
38 had already seen
39 is sleeping
40 didn't enjoy
41 had already began
42 arrive
43 is cooking
44 was watching( câu này do có thời gian cụ thể trong qk nên phải dùng quá khứ tiếp diễn)
45 did - work
46 is learning
47 had done
48 has just seen
49 have seen - arrived
50 haven't met - left
51 are making
( mấy câu chị in đậm là em chưa làm hoặc làm sai, em xem lại nhes^^)