ĐỀ số 1
3) liked
4) play
6) are playing
7) answering
8) sent
ĐỀ SỐ 2
3) have been
4) have gone
5) came
6) have you forgotten
7) have just gone
8) read
9) Have you ever been
11) smoke
13) has translated
14) has written
15) has never been
16) have you been
17 ) have you known
18) Have you ever met
19 ) have had
20 ) have you lived ..... come
21) has come .... has learnt
