Câu hỏi: Many animals were born in captivity. Resultantly, they do not always breed well.

A. imprisonment

B. lock

C. detention

D. freedom

Câu 1: You can’t stop smoking immediately. Just try to …….. a little.

A. go on

B. give up

C. keep

D. delete

Câu 2: Professor Berg was very interested in the diversity of cultures all over the world.

A. variety

B. changes

C. conservation

D. number

Câu 3: It is crucial that urban people not look down on rural areas.

A. evil

B. optional

C. unnecessary

D. vital

Câu 4: These projects have proved to be very effective in dealing with global climate change, which was considered an insoluble problem in the first 30 years of this century.

A. hard

B. challenging

C. unsolvable

D. unbearable

Câu 5: Although Brenda came last, everyone agreed she had ________ her best.

A. had

B. got

C. done

D. made

Câu 6: It will take more or less a month to prepare for the wedding.

A. approximately

B. generally

C. frankly

D. simply