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

A. to improve

B. improve

C. improving

D. improved

Câu 1: He came up with the solution __________ every problem.

A. in

B. at

C. for

D. to

Câu 2: Tom is watching TV now. So ____________.

A. does Mary

B. Mary

C. is Mary

D. Mary does

Câu 3: Your sister used to visit you quite often, ________?

A. didn't she

B. doesn't she

C. wouldn't she

D. hadn't she

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

A. was discovered

B. has been discovered

C. was discover

D. they discovered

Câu 5: My friend and I _______ your sister tomorrow afternoon after she _______ her work.

A. will meet-will finish

B. will meet-has finished

C. will have met-has finished

D. will have met-will finish

Câu 6: We decided ________ at home this afternoon.

A. staying

B. stayed

C. stay

D. to stay