How long do you think the computer company brings out a new product?A. it will be before

问题补充：

How long do you think the computer company brings out a new product?

A. it will be before

B. will it be until

C. will it be when

D. it will be that

答案：

(答案→)A. it will be before

B. will it be until

C. will it be when

D. it will be that

解析：句意：你觉得电脑公司多长时间会推出一种新产品？是对句型：It is +段时间+before+从句.中的时间进行提问。该句型在这里是do you think的宾语从句，习惯上把从句中的疑问词放在句首。until直到… …才；when当……时候。故选A。

考点: 考查宾语从句的用法。