When ______ for his views about his teaching job, Philip said he found it very interesting and rewarding.
A.asking
B.having asked
C.asked
D.to be asked
网友回答
C解析考察非谓语动词作状语的用法。Philip与ask之间构成被动关系，所以使用过去分词的形式，在when后面省略了he was;结合句意可知C正确。句意：当被询问关于对于教书工作的意见时，philip说他认为教书很有趣也很值得。