Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 6)

It was suggested that Tom studied the document more thoroughly before attempting to pass

72/80

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

It was suggested that Tom studied the document more thoroughly before attempting to pass 

was

studied

thoroughly

attempting to

Giải thích

Đáp án là B.

studied => had studied, vì QKHT + before + QKĐG/ V-ing