It's impossible for all the people to get jobs because____ of them are not fit for them.

A. none　　　　 B. all　　　　 C. not all　　　　 D. every one

 

B

not與all連用為部分否定，表示“并非所有的……都……”；D項(xiàng)中every one與not連用也可表示部分否定，但謂語動(dòng)詞要用單數(shù)。

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