When I began to sing he laughed and laughed which made me.A embarrassed B impolite C exh

问题补充：

When I began to sing, he laughed and laughed, which made me.

A、embarrassed B、impolite C、exhausted

答案：

解析：A.感动尴尬的，B.不礼貌的，C.疲倦的。根据句意：当我开始唱歌时，他总是笑，这样使我感到很尴尬。故选A.