单项选择题

There is hardly any ______ hotel room available during the summer holidays.

A．vacant
B．empty
C．free
D．blank
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单项选择题
Reasons for careful teaching range from preventing a child ______ to keeping a child occupied.
A．sinking behind
B．falling behind
C．drawing behind
D．crawling behind
单项选择题
Weather ______, the Johnsons will hold an open-air garden party.
A．permits
B．permitted
C．permitting
D．being permitted
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