单项选择题

There is ______ "s" in the word "sense".

A． a
B． /
C． an
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单项选择题
The hills will be covered with young trees ______ a few years' time.
A． in
B． after
C． during
单项选择题
______ is the weather like in London now
A． What
B． How
C． Whether
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