People should send their complaints to the head office.

A. Complaints should be sent to the head office.

B. Complaints should be sent to the head office by people.

C. Their complaints should be sent to the head office by people.

D. Their complaints to the head office should be sent.

Đáp án
A. Complaints should be sent to the head office.

Câu hỏi thuộc Bài tập:

60 PASSVE VOICE EX2 MR. BA