IV. Choose the underline word or phrase (marked A, B, C or D) in each sentence that needs correcting.

Câu hỏi

You must know when to giving sincere advice to your friends.

A. must

B. to

C. giving

D. to

Đáp án
C. giving

Câu hỏi thuộc Bài tập:

Tiếng Anh 9-Unit 3