Câu hỏi: Nylon ______________ in the 1930s

A. invented

B. was invented

C. is invented

D. has been invented

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: She noticed a marked _______ in the children on her second visit.

A. differ

B. difference

C. different

D. differently

Câu 3: She used __________ to a special school for deaf-mute students.

A. go

B. to go

C. going

D. went

Câu 4: We _________ some food to tomorrow’s party.

A. are bringing

B. bring

C. brought

D. would bring

Câu 5: She had worked as a tourist guide before __________ a teaching career.

A. starting

B. start

C. to start

D. started

Câu 6: Braille _________ a system of raised dots that can be read with the fingers by people who are blind.

A. am

B. be

C. is

D. are