I felt it a great honour to speak to you. A. to askB. askingC. to be askedD. having asked

问题补充：

I felt it a great honour to speak to you.

A. to ask

B. asking

C. to be asked

D. having asked

答案：

A. to ask

B. asking

(答案→)C. to be asked

D. having asked

解析：考查非谓语动词。句意：被要求和你说话我感到巨大荣幸。不定式做状语表示具体的将要进行的动作，本句中主语是动作对象，故不定式用被动语态。选C。