Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Câu hỏi

Traffic rules _______ by all people.

A. must be obeyed

B. must obey

C. must obeyed

D. must have obeyed

Đáp án
A. must be obeyed

Câu hỏi thuộc Bài tập:

E9- Vào 10- Đề ôn 16