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

A. was discovered

B. has been discovered

C. was discover

D. they discovered

Câu 1: If I __________a lot of money now, I ______________a new car.

A. have /will buy

B. have / would buy

C. had/ will buy

D. had/ would buy

Câu 2: ___________ does Minh do after school? He plays soccer with his friends.

A. When

B. Which

C. What

D. Why

Câu 3: It’s necessary __________ your listening and writing skills.

A. to improve

B. improve

C. improving

D. improved

Câu 4: He told me ___________ my best to study English.

A. try

B. trying

C. to try

D. tried

Câu 5: Alice wasn’t ___________ to be in my class.

A. too old

B. old enough

C. so old

D. such old

Câu 6: He came up with the solution __________ every problem.

A. in

B. at

C. for

D. to