What great fun the children had basketball! I didn’t have the heart to stop them.
A. to play
B. playing
C. play
D. played
网友回答
A. to play
(答案→)B. playing
C. play
D. played
解析：句意：孩子们多么高兴打篮球啊！我没有阻止他们的心情。 固定用法have fun doing sth 高兴做某事，因此选B。
考点: 考查动词短语的用法。