Sarah really can't remember

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D.where it was that 为正确选项.
本题考点：宾语从句是强调句时的语序问题.本题的宾语从句,是个强调句,被强调部分是疑问词where,语序：疑问词+it is / was +that+其它.
如果还原回普通宾语从句为：Sarah really can't remember {where }she met the person standing in front of her.
======以下答案可供参考======
供参考答案1:
D 考查强调句型。其中where是被强调部分，that是强调句型中引导词。
供参考答案2:
选D供参考答案3:
C 宾语从句用陈述句语序
供参考答案4:
选C，宾语从句
standing in front of her 做的是person的后置定语，修饰person