Đáp án:

`(1)` We haven't finished homework yet.

`(2)` Have you ever been Paris before?

`(3)` We have never seen high school music before.

`(4)` Your hands have been dirty. Have you just repaired your bike?

`(5)` We have walked in the rain many times.

`(6)` How long have you been there?

`(7)` So far, he has written many novels.

`(8)` We have already finish the work.

`(9)` We haven't met herany where recently.

`(10)` This is the first time we have enjoyed food in this restaurant.

#Chúc bạn học tốt!