单项填空
1.(2012年福建卷)—When did the computer crash?
—This morning,while I ________ the reading materials downloaded from some websites.
A.have sorted
B.was sorting
C.am sorting
D.had sorted
解析:考查动词时态。对话讲的是过去的事情,应用过去时态,while 引导的时间状语从句往往与进行时连用,故选B。
答案:B
2.She is very dear to us.We have been prepared to do________it takes to save her life.
A.whichever
B.however
C.whatever
D.whoever
解析:whatever在此引导宾语从句,并在从句中作宾语,相当于anything that。
答案:C
3.As a new graduate,he doesn’t know________it takes to start a business here.
A.how
B.what
C.when
D.which
解析:what引导宾语从句,并在从句中作takes的宾语,what保留自身的疑问含义,表示“什么”。
答案:B
4.It is uncertain________side effect the medicine will bring about,although about two thousand patients have taken it.
A.that
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