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All passengers     go through safety check before they take the underground.(  ) A.can B.may C.mus...

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get through    go through    get over    go over  
get through    go through    get over    go over  
not go    aren’t going    don’t go    not going  
get through    get across    go through    go across  
got through    went into    got over    went through  
Go down   Go against    Go through    Go across  
search    check    test    observe  
can    may    must    will  

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