问题
填空题
She was surprised when she was greeted by a stranger.______ she was greeted by a stranger.
答案
参考答案：It was a surprise that
解析： 用it做形式主语, 真正的主语是that引导的从句。
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She was surprised when she was greeted by a stranger.______ she was greeted by a stranger.
参考答案：It was a surprise that
解析： 用it做形式主语, 真正的主语是that引导的从句。