用所给词的适当形式填空 Who is she _____(wait) for?

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用所给词的适当形式填空 Who is she _____(wait) for?
用所给词的适当形式填空 Who is she _____(wait) for?

用所给词的适当形式填空 Who is she _____(wait) for?
waiting
is + 现在分词 构成:现在进行时结构