Câu hỏi: He told me ___________ my best to study English.

A. try

B. trying

C. to try

D. tried

Câu 1: What should you consider before _________ for an exercise class?

A. sign up

B. to sign up

C. signing up

D. will sign up

Câu 2: He came up with the solution __________ every problem.

A. in

B. at

C. for

D. to

Câu 3: – 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 4: ___________ does Minh do after school? He plays soccer with his friends.

A. When

B. Which

C. What

D. Why

Câu 5: It’s necessary __________ your listening and writing skills.

A. to improve

B. improve

C. improving

D. improved

Câu 6: Alice wasn’t ___________ to be in my class.

A. too old

B. old enough

C. so old

D. such old