单项选择题

We usually have a lot of staff illness ______ the winter period.

A．for
B．since
C．over
D．while
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单项选择题
At the end of the night the girls were fast ______.
A．asleep
B．sleeping
C．sleep
D．slept
单项选择题
He speaks ______ English and German.
A．any
B．either
C．neither
D．both
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