单项选择题

By next week the new regulations （）.

A．will introduce
B．are to introduce
C．are to be introduced
D．will have introduced

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单项选择题
He finds it difficult to （） himself to the climate here.

A．account
B．accustom
C．apply
D．adopt
单项选择题
We （） as well leave here today.

A．must
B．might
C．need
D．can
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