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

A. married

B. lonely

C. divorced

D. alone

Câu 1: Fish only species that are not of concern, threatened or endangered.

A. bettered

B. born

C. safeguarded

D. taught

Câu 2: The wise man has long ears and a short tongue.

A. short

B. prolonged

C. high

D. crooked

Câu 3: We know not what is good until we have lost it.

A. find

B. count

C. guess

D. learn

Câu 4: Use water sparingly and keep water clean.

A. dusty

B. dirty

C. wicked

D. halfway

Câu 5: She had a cozy little apartment in Boston.

A. uncomfortable

B. dirty

C. lazy

D. warm

Câu 6: 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