The audience were so by his humorous performance that they kept laughing all the time.A.

问题补充：

The audience were so by his humorous performance that they kept laughing all the time.

A. moved

B. frightened

C. entertained

D. shocked

答案：

A. moved

B. frightened

(答案→)C. entertained

D. shocked

解析：形容词辨析。A感动的；B害怕的；C快乐的。D震惊的。句意：观众对于他幽默的表演感到如此快乐以至于他们一直笑个不停。根据句意说明C正确。