1 come back                                  Những câu này thêm s còn mấy câu khác khỏi 
2 usually prepares                         1 plays 2 swims 3 sleeps 4 runs 8 drives 9 
3 drives                                          10 writes 11 instructs 15 repairs 16 takes 
4 can not speak                              17 explains 19 studies 
5 do you like
6 always rains
7 are cost
8 never visit
9 goes
10 am
11 do not to play
12 does not to clean
13 does not to do
14 do not to watch
15 do not to wake up
16 does not to go
17 does not to carry
18 doesnot teach
19 does not to tell
20 don not to fly