Graham was disappointed because he _______ for the...
Câu hỏi: Graham was disappointed because he _______ for the bus for an hour.
A. was waiting
B. waited
C. has been waiting
D. had been waiting
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2018 Tiếng Anh - THPT Chuyên KHTN - Hà Nội - lần 2