They tired to think of a plan （）they could fulfill their task ahe_英语解答

They tired to think of a plan （）they could fulfill their task ahead of time
A for which
B By which
请说说区别

人气：428 ℃　时间：2019-10-17 04:01:58

解答

答案：A
解析：这是一个定语从句,用which引导,主要区分前面的介词,for表示目的,而by一般指通过.方法.
翻译：他们努力思考出一个计划,以至他们能够提前完成任务.