单项选择题

I didn't see him in the meeting room yesterday. He ______ at the meeting.

A. mustn't have been
B. shouldn't have spoken
C. needn't have spoken
D. need not doing
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You ______ that when your maid is here.
A. need not to do
B. don' t need do
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单项选择题
I would just as soon stay at home ______ go for a walk.
A. for
B. to
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