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

You ____ tell anyone what I've revealed to you. It's still a secret.

A. mustn't

B. had better not

C. ought not to

D. don't have to

Đáp án
A. mustn't

Câu hỏi thuộc Bài tập:

E11- Unit 2- Test for Unit