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

A. does Mary

B. Mary

C. is Mary

D. Mary does

Câu 1: Ba always ____________ the homework before going to class.

A. does

B. dos

C. do

D. is doing

Câu 2: He told me ___________ my best to study English.

A. try

B. trying

C. to try

D. tried

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

A. to improve

B. improve

C. improving

D. improved

Câu 5: There _______ a flower vase, a jar of jam, and some flour on the table.

A. be

B. is

C. are

D. were

Câu 6: Gold _______in California in the 19th century.

A. was discovered

B. has been discovered

C. was discover

D. they discovered