tất cả đều là thì hiện tại hoàn thành
cấu trúc : s + have / has + v -ed / v3
1. went - had finished
2 already had seen
3 had gone
4 hadn't eaten
5 .already had began
6 watched - had done
7 had been - was
8 had gone - sat - rested
9 had gone - went
10 had won
