Câu hỏi: What _________ computer a miraculous device?

A. makes

B. make

C. making

D. to make

Câu 1: The weather was fine so we decided to go ____________ foot.

A. on

B. by

C. with

D. in

Câu 2: She noticed a marked _______ in the children on her second visit.

A. differ

B. difference

C. different

D. differently

Câu 3: His handicap prevented him ___________ swimming all lifelong.

A. to

B. off

C. from

D. up

Câu 4: He sometimes ____________ sports with friends.

A. play

B. plays

C. played

D. playing

Câu 5: Every day, he _________ his buffalo to his plot of land.

A. lead

B. leads

C. to lead

D. leading

Câu 6: Nylon ______________ in the 1930s

A. invented

B. was invented

C. is invented

D. has been invented