问题描述：
she has just arrived and I didnt know she until yesterday A had come B will
she has just arrived and I didnt know she until yesterday
A had come B will come C was coming D is to come
为什么选C,求详解
she has just arrived and I didnt know she until yesterday
A had come B will come C was coming D is to come
为什么选C,求详解
问题解答：
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