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

题目
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
答案
她已经来了 我不知道她 要 来
didn‘t 说明是 过去 不知道她 要 来,所以用过去将来时咯
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