问题描述:
"Who's knocking at the door?" "______ is Kate."
A. it B. this C. he D. she
请高手给个确切的答案,再讲下其中的语法知识,谢谢!
A. it B. this C. he D. she
请高手给个确切的答案,再讲下其中的语法知识,谢谢!
问题解答:
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