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

A. was discovered

B. has been discovered

C. was discover

D. they discovered

Câu 1: – 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 2: In the USA students ________ school uniform.

A. wore

B. wearing

C. don't wear

D. not wear

Câu 3: 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 4: When my father was young, he _____ work in the garden for long hours.

A. can

B. could

C. will

D. should

Câu 5: ___________ does Minh do after school? He plays soccer with his friends.

A. When

B. Which

C. What

D. Why

Câu 6: My mother told me __________ hard.

A. study

B. studying

C. to study

D. studied