Câu hỏi: George is not enough intelligent to pass this economics class without help.

A. enough intelligent

B. to pass

C. economics

D. help

Câu 1: Sports clear my mind. They also help me maintain a healthy lifestyle.

A. Not only do sports clear my mind, but they also help me maintain a healthy lifestyle.

B. Neither do sports clear my mind nor help me maintain a healthy lifestyle.

C. Sports clear my mind so that I can maintain a healthy lifestyle.

D. All that sports can do is to clear my mind instead of maintaining a healthy lifestyle.

Câu 2: Sleeping, resting, and to drink fruit juice are the best ways to cure for a cold.

A. Sleeping

B. to drink

C. juice

D. best ways

Câu 3: The result of the studies have had a strong impact on future developments.

A. of

B. have had

C. strong

D. on

Câu 4: After David _________ his homework, he went straight to bed.

A. had finished

B. has finished

C. was finished

D. finished

Câu 5: We should participate in the movement _________to conserve the natural environment.

A. which organized

B. organizing

C. to organize

D. organized

Câu 6: An endangered species is the one _________ population is so small that it is in danger of becoming extinct.

A. which

B. what

C. whose

D. who