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用所给动词的适当形式 用所给动词的适当形式填空. 1.Hello,I _____ (not know) you ____

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用所给动词的适当形式
用所给动词的适当形式填空.
1.Hello,I _____ (not know) you _____(be) in London.How long have you been
there?
2.By the end of last week,he _____(read) this book four times.
3.I _____ (not have) any English knowledge before I came here.
4.I _____(lose) my keys.I can't remember where I last saw them.
5.-_____you _____ (see) the film yet'?
    -Yes,I _____(see) it last week.
1. didn't know, were   
2. had  read    
3. hadn't  had
4. have lost      
5. Have; seen; saw