How long do you think it will be the computer company puts forward a new product?A. befo

问题补充：

How long do you think it will be the computer company puts forward a new product?

A. before

B. since

C. until

D. that

答案：

(答案→)A. before

B. since

C. until

D. that

解析：考查连词。It is/will + 时间段 + before….在……之后……才，句意：你觉得这家电脑公司多长时间能推出一个款产品？