Question

【題目】How long do you think _________ the computer company launches a new model?

A． it will be before B． will it be until

C． will it be when D． it will be that

Answer 1

【答案】A

【解析】it be 一段時(shí)間before從句；一段時(shí)間以后某事才發(fā)生。Before后面的時(shí)間狀語(yǔ)從句使用一般現(xiàn)在時(shí)代替將來(lái)時(shí)，前面的主句使用將來(lái)時(shí)。本題是對(duì)“一段時(shí)間進(jìn)行提問(wèn)”。故C正確。