Câu hỏi: – Do you have to buy this hat? – No, I _____. It isn't necessary.

A. mustn't

B. won't

C. needn't

D. don't need

Câu 1: It’s necessary __________ your listening and writing skills.

A. to improve

B. improve

C. improving

D. improved

Câu 2: What should you consider before _________ for an exercise class?

A. sign up

B. to sign up

C. signing up

D. will sign up

Câu 3: At the end of the story, the prince and princess fall _________ love with each other.

A. in

B. on

C. for

D. at

Câu 4: Gold _______in California in the 19th century.

A. was discovered

B. has been discovered

C. was discover

D. they discovered

Câu 5: I usually watch TV ________ the evening.

A. on

B. at

C. in

D. All are correct

Câu 6: Your sister used to visit you quite often, ________?

A. didn't she

B. doesn't she

C. wouldn't she

D. hadn't she