How long do you think the puter pany 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
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(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。