While the police____(leave) the scene of the crime,they_____(atta_英语解答

While the police____(leave) the scene of the crime,they_____(attack) suddenly.
动词填空第一空用were leaving 还是left?为什么?

人气：477 ℃　时间：2020-05-06 19:49:28

解答

were leaving 意为“当……时候,和……同时”,引导时间状语从句
警察离开犯罪现场的同时,他们突然展开了攻击.