Câu hỏi: One in seven accidents is caused by sleepy drivers.

A. awake

B. unwell

C. exhausted

D. talkative

Câu 1: Advanced students need to be aware of the important of collocation.

A. of high level

B. of great important

C. of low level

D. of steady progress

Câu 2: We know not what is good until we have lost it.

A. find

B. count

C. guess

D. learn

Câu 3: At times, this can be risky, and the keepers have been injured and one has been killed.

A. good

B. useful

C. healthy

D. secure

Câu 4: Kevin stopped to buy the evening paper from a news vendor.

A. purchase

B. get

C. sell

D. give

Câu 5: Some couples see single women as a threat to their relationships.

A. married

B. lonely

C. divorced

D. alone

Câu 6: Fish only species that are not of concern, threatened or endangered.

A. bettered

B. born

C. safeguarded

D. taught