单项选择题

"May I speak to your manager Mr. Williams at five o'clock""I'm sorry. Mr. Williams ______ to a conference long before then."

A．will have gone
B．mustn't follow
C．couldn't have been following
D．shouldn't have been following
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单项选择题
I'm glad to say that he's already finished ______ 50% of the book in these past three days.
A．no less than
B．no more than
C．not more than
D．much less than
单项选择题
When they were in difficulty, we would come to ______ help.
A．the villagers'
B．the villagers
C．the villagers of
D．the villagers for
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