首页 > —What were you doing _________your mother was cleaning up the room?—I was reading a book.[ ]A. until

—What were you doing _________your mother was cleaning up the room?—I was reading a book.[ ]A. until

题目简介

—What were you doing _________your mother was cleaning up the room?—I was reading a book.[ ]A. until

题目详情

—What were you doing _________your mother was cleaning up the room?

—I was reading a book.

[ ]

A. until
B. if
C. while
D. though

题型：单选题难度：中档来源：同步题

答案

C

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