语法综合练习6

来源：百度知道 编辑：UC知道 时间：2024/05/03 00:46:51
_______ is often the case, we have worked out the producion plan.
A. Which B. When C. What D. As
请详细写出解题的过程和思路。

D

as引导定语从句，指代后边的整句we have worked out the production plan，as又作is often the case主句的主语。
情况总是这样，我们已经制定出工作计划。

常用还有:
as is known to all 众所周知
as is shown above 正如上面显示的那样

D..
根据句意啊:
根据常见的事例,我们已经做出了生产计划..
AS在这里引导后面的从句.