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

A. differ

B. difference

C. different

D. differently

Câu 1: She had worked as a tourist guide before __________ a teaching career.

A. starting

B. start

C. to start

D. started

Câu 2: His handicap prevented him ___________ swimming all lifelong.

A. to

B. off

C. from

D. up

Câu 3: Another man-made satellite has _______ up into space.

A. sent

B. be sent

C. been sent

D. sending

Câu 4: Three women, none of whom we _______ before, _______ out of the hall.

A. saw-had come

B. had seen-came

C. saw-came

D. had seen-had come

Câu 5: Which activities do you think would be difficult ________ blind and deaf people?

A. to

B. for

C. with

D. of

Câu 6: What _________ computer a miraculous device?

A. makes

B. make

C. making

D. to make