if/whether; I; was.本题考查的是一般疑问句的直接引语变间接引语.时态由一般将来时变为过去将来时,第二人称的you 要和主句中的宾语一致.为I.——青夏教育精英家教网—

摘要：if/whether; I; was.本题考查的是一般疑问句的直接引语变间接引语.时态由一般将来时变为过去将来时,第二人称的you 要和主句中的宾语一致.为I.

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选择括号内恰当的单词或词组填入空白处，使句意完整、正确。（5分）
【小题1】Are you going to               （join / take part in）the school rowing club?
【小题2】I think the computer is               （used / useful）.
【小题3】I spent two hours                （sweep / sweeping）the house yesterday.
【小题4】The house is so expensive that I can’t               （share / afford）it.
【小题5】Even scientists aren’t sure               （if / whether）or not there are UFOs.

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I don’t know he will come tomorrow, he comes, I will tell you.

A．if; whether	B．whether; whether
C．whether; if	D．that, whether

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I don’t know _____ or not he will come . _______ he comes , I will call you .

________ you can’t decide ________ to go or not, just stay at home and sleep all day.

A. Whether, if B. If, whether C. If, weather

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—Mary，I don’t know ____ you can come tomorrow morning.

—No problem! I’ll be here _____I’m free then.

A. if；if???????? ?? B. if; whether???? ?? C. whether；till? ? D. whether；until

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