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!