单项选择题

--Where are ______ --are in ______ pencil-box.

A． their, Their, they
B． they, They, their
C． are, Their, are
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单项选择题
--______ are you--I am twelve.
A． How
B． How old
C． What
单项选择题
Getting up ealier is good ______ your health.
A． to
B． at
C． for
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