The singer and dancer asked to sing a song in public, and she agreed happily.
A. is
B. was
C. are
D. were
网友回答
A. is
(答案→)B. was
C. are
D. were
解析：考查主谓一致和时态：句意：这个歌手兼舞蹈家被邀请在公共场合唱一首歌，她高兴地答应了。The singer and dancer是“歌手兼舞蹈家”，因为只有一个the，所以是指一个人，从agreed说明是一般过去时，选B。