The professor had already given the homework assignment when he had remembered that Monday

The professor had already given the homework assignment when he had remembered that Monday

Đề bài: Find the mistake in the sentence

The professor had already given the homework assignment when he had remembered that Monday was a holiday.

A. the homework assignment

B. had remembered

C. Monday

D. was

Lời giải:

Đáp án: B

Giải thích: hành động xảy ra sau phải dùng quá khứ đơn

Sửa: had remembered => remembered

Dịch: Giáo sư vừa giao bài tập về nhà thì anh ta nhớ ra thứ hai là ngày nghỉ lễ.