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题目
题型:不详难度:来源:
By the time a child is five, he _______ hundreds of hours of television.
A.will watchB.will have watchedC.had watchedD.is watching

答案
B
解析
在时间状语从句中By the time+ 一般现在时态,表示的是将来,主句应用将来完成时态,句意:到一个孩子五岁的时候,他将会已经看了几百个小时的电视了。所以选B。
核心考点
试题【By the time a child is five, he _______ hundreds of hours of television.A.will w】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
— Isn’t it hard to drive downtown to work?
— Yes, that’s why I          to work by train.
A.have been goingB.was going
C.have goneD.will have gone

题型:不详难度:| 查看答案
—Do you still remember the first time you _______with a girl?
—Not exactly, but I remember it was a Sunday.
A.talkedB.had talkedC.have talkedD.were talking

题型:不详难度:| 查看答案
It"s necessary that measures _____ at once to help people understand global warming is  
affecting our life to an increasingly high degree.
A.must be takenB.be takenC.should takeD.are taken

题型:不详难度:| 查看答案
Customers are asked to make sure that they______ the right change (零钱) before leaving the shop.
A.will giveB.will be givenC.have givenD.have been given

题型:不详难度:| 查看答案
Up till now, more than 120 world-famous enterprises ______ companies in Tianjin Binhai New Area.
A.have establishedB.establishedC.will establishD.have been established

题型:不详难度:| 查看答案
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