一道选择题,请帮帮忙，在线等

来源：百度知道 编辑：UC知道 时间：2024/09/21 23:40:54
they met one day in college while she was reading a book in the library and he ____ down beside her.
A. was sitting B.sat C. had sit D.sits

请详细解释为什么你选这一项

A.
while后的句子是并列关系，由and连接。既然前面she was reading a book in the library 是用过去进行时，那么后一部分就应该保持时态一致。

A

因为she was reading a book in the library和he was sitting down beside her是并列的,它俩的时态应该是一致的. 在这个时候,他们相遇了