Câu hỏi
Choose the best answer to fill in each blank.
I .......... there once a long time ago and .............. back since.
A. went/have not been
B. go/am not
C. have gone/was
D. was going/had not been
went/have not been
go/am not
have gone/was
was going/had not been
H. Huong
Giáo viên
3