2,trang 4
1.have not seen 10.collected
2.call 11.moved
3.have read 12.have been 4. playing 13.eats
5.goes 14.spended
6.have been 15.heared
7have taken 16.have been
8.have has 17.Have-finished
9.went 18.will go
19.is doing
20.discoveted
xin lỗi nhé thông cảm cho mk