The teacher turned up after we ___________for him for over 30 minutes. A. waited B. was waiting
The teacher turned up after we ___________for him for over 30 minutes.
A. waited
B. was waiting
C. have waited
D. had been waiting
The teacher turned up after we ___________for him for over 30 minutes.
A. waited
B. was waiting
C. have waited
Đáp án: D
Giải thích: Cấu trúc phối thì với “after” trong quá khứ: S + V(quá khứ đơn) + after + S + V(quá khứ hoàn thành/ quá khứ hoàn thành tiếp diễn)
Dịch: Giáo viên xuất hiện sau khi chúng tôi đợi thầy hơn 30 phút.