The children enjoyed very much last night.A. theyB. themC. themselvesD. theirs

问题补充：

The children enjoyed very much last night.

A. they

B. them

C. themselves

D. theirs

答案：

A. they

B. them

(答案→)C. themselves

D. theirs

解析：句意：孩子们昨天晚上玩得很开心。短语enjoy onself玩得开心，用反身代词，故选C。