All the children had a good time at Mark’s birthday party.A. help each otherB. enjoyed the

问题补充：

All the children had a good time at Mark’s birthday party.

A. help each other

B. enjoyed themselves

C. had a wonderful time

D. have a big dinner

答案：

A. help each other

(答案→)B. enjoyed themselves

C. had a wonderful time

D. have a big dinner

解析：考查词组：have a good time玩得愉快，和enjoyed themselves一样，句意：所有的孩子在马克的生日聚会的时候玩得愉快。选B。