Graham was disappointed because he _______ f...
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 quốc gia 2020 môn tiếng anh (có lời giải) !!