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:
A. before
B. since
C. until
D. that
解析:考查固定句型:这是个固定的时间状语从句 it will be + 一段时间+ before sth. happens,do you think为插入语,可知此处应用陈述语气,排除B、C两项;此处不是强调句,可排除D;How long属于时间段,故选A。