Question

the students will put off the outing until next w

the students will put off the outing until next week,()they won't be so busy a.when b.as c.since d.while求详解

Answer 1

when
定语从句。
把句子分解就是。
The students will put off the outing until next week. They won;t be so busy at that time/ next week.
很显然在第二句中： at that time/ next week为时间状语，故用when引导。

Answer 2

答案A when
翻译：学生们把出游推迟到下周，这是他们不太忙的时候。特殊疑问词when 引导的定语从句。