文章：Denisisathief.HewritesalttertoanotherthirfPat.Butthepolicegettheletter.ItreadsBNLDZSLHCMHFGSZMCGZUDSGDSGHQSXONTMCRVHSGXNT.What'sitabout?HowcanyoureaditThepolicemenareveryquick.Theystudythelettercarefu

　　文章：Denisisathief.HewritesalttertoanotherthirfPat.Butthepolicegettheletter.ItreadsBNLDZSLHCMHFGSZMCGZUDSGDSGHQSXONTMCRVHSGXNT.

　　What'sitabout?Howcanyoureadit

　　Thepolicemenareveryquick.Theystudythelettercarefullyandsoonfindoutwhattheywant.Nowifyouwereapoliceman,canyoureanDenis'sletter?

　　MaybeyouneedsomehelpwhenDeniswantsaletter.Hewritesdowntheletterbeforeitinthealphabet.

　　NowcanyoureadDenis'letter?WhatmustPatdoWhen?AndwhatdoesDeniswant?

　　1.IntheletterDenisasksPattogoat___.

　　A.noonB.fiveo'clockC.eighto'clockD.midnight

　　那几个大写的字母应该怎样才能推算出来它的意思?