ALEX DIDN'T COME TO SEE THE FILM LAST NIGHT BECAUSE HE ___________...

7. - KIEM TRA HOC KY II
Lớp 9 Tiếng Anh KIEM TRA HOC KY II
7. Alex didn't come to see the film last night because he ___________ it before.A. sawB. had seenC. has seenD. was seen