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
A. asking
B. having asked
(答案→)C. asked
D. to be asked
解析：考查非谓语动词用法。Philip与ask之间构成被动关系，故使用过去分词表示被动。D选项的不定式表示将来，故C正确。