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

A. starting

B. start

C. to start

D. started

Câu 1: After a long time of revision, she is gradually fond _________ English

A. in

B. on

C. of

D. with

Câu 2: Nylon ______________ in the 1930s

A. invented

B. was invented

C. is invented

D. has been invented

Câu 3: The books ___________ have been read by the students should be put on the shelf.

A. who

B. whose

C. that

D. what

Câu 4: Every day, he _________ his buffalo to his plot of land.

A. lead

B. leads

C. to lead

D. leading

Câu 5: She noticed a marked _______ in the children on her second visit.

A. differ

B. difference

C. different

D. differently

Câu 6: We _________ some food to tomorrow’s party.

A. are bringing

B. bring

C. brought

D. would bring