Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

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

Đáp án
D. had been waiting

Câu hỏi thuộc Bài tập:

Bài tập Ngữ pháp & Từ vựng - Luyện thi THPT Quốc gia Tiếng Anh (Mã 012)