Question 15. Tim was disappointed because he_____________for the train for two hours.
A. was waiting B. waited C. has been waiting D. had been waiting
Question 16. There were many politicians at the meeting, several of _____________ were very young.
A. that B. whom C. who D. which
4. Đề thi thử THPT 2021 - Tiếng Anh - Nhóm GV MGB - Đề 4 - có lời giải