单项选择题

I asked him whether he had done all the work himself ______ he had had any asistance.

A. and
B. but
C. nor
D. or
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单项选择题
One of the men present held the view ______ the book said was right.
A. what that
B. what
C. that
D. that what
单项选择题
He came to China in ______.
A. forty
B. forties
C. late forties
D. his early forties
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