Câu hỏi: She heated the chocolate until it ______ , then poured it over the cake.

A. changed

B. melted

C. floated

D. flooded

Câu 1: The peoples of the African interior began to ______ gold in exchange for the goods they needed from abroad.

A. afford

B. offer

C. receive

D. accept

Câu 2: Their walking-tour through Lapland never came _______.

A. on

B. off

C. out

D. round

Câu 3:  This young tree could not have been damaged by accident: I believe it was done __________.

A. in fact

B. on purpose

C. by appointment

D. by understanding

Câu 4: Children _______ good food if they are to be healthy.

A. have

B. receive

C. need

D. desire

Câu 5: After a lot of difficulty, he _____ to open the door.

A. managed

B. succeeded

C. obtained

D. gained

Câu 6:  As he was ill, he had to ______ the party.

A. miss

B. avoid

C. regret

D. lack