It shames me to say it,but I cheat when_____the entrance tes

It shames me to say it,but I told a lie when ________ at the meeting by my boss
我知道答案是 questioned
但是为什么不能用疑问词+不定式结构写 when to be questioned

It shames me to say it,but I told a lie when _____ at the meeting by my boss.

[ ]

A. questioning B. having questioned C. questioned D. to be questioned

What__!l missed seeing the English film!A.shame B.shames C.a shame D.an shame

英语单选 文库下了份题
It shames me to say it,but I told a lie when _____ at the meeting by my boss.
A.questioning B.having questioned 　C.questioned D.to be questioned
There are now three times as many schools in this city _____ ten years ago.A.as it is B.with C.more than D.as
The man we followed suddenly stopped and looked as if _____ whether he was going in the right direction.
A.to see B.seeing C.seen D.saw
Though _____ money,his parents managed to send him to university.
A.lacked B.lacking of C.lacking D.lacked in
It is well known that the horse will run faster if _____ .
A.is whipped B.whipping C.it is D.whipped
The research is so designed that once _____ nothing can be done to change it.A.begins B.having begun 　C.beginning D.begun
Friendship is like money:easier made than _____ .
A.kept B.to be kept C.keeping D.being kept
Unless _____ to speak,you should remain silent at the conference.
A.invited B.inviting C.being invited D.having invited
The teacher asks us not to stand up until _____ in the English class.
A.told B.being told C.told to D.having told
When _____ ,the museum will be open to the public next year.
A.completed B.completing C.being completed D.to be completed
When I was at your age my father told me that I should go and work wherever ____ most.
A.needed me B.needed C.I wanted D.asked

【翻译】It shames me to say it ,but I told a lie when questioned at the meeting by my boss.