题目内容
. —What are you worrying about?
—It is ________ there is any chance of being infected by AH1N1 virus.
A.why B.that C.if D.whether
D

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题目内容
. —What are you worrying about?
—It is ________ there is any chance of being infected by AH1N1 virus.
A.why B.that C.if D.whether
D