这篇完形帮忙填下
Ampere(安培)wasafamousscientist(科学家).Helikedto_himselfbusyalldaylongbothathomeandinhisOffice.Sometimeshefound_veryhardtoworkforalongtimebecausemany_cametotalktohimathome.Inordertohavefewervisitors,ampoereisn'tathome.
Onedayhecamehomefromhisofficelateintheafternoon.whenhe_hisRate,hesawtheplateandreadit,andsaidtohinself,"oh,yes,MrAmpereisn'tin._thathereturnedtohisoffice
_time,Amperewenttogiveatalkatameeting.Ohhiswaytothemeetinghall,he_ariver.Heoicjedupastone,andplayedwiththestoneinhishandandthenputitintohispocket.Beforehelefttheriver,helook"thestone"outofhispocketandthrewitbackintotheriver.Duringthemeeying.whenAmperewantedtosee_.hewassurprisedtofindthepocket.hetookoutofhispocketwasNOTawatch._astone
1.A.keepBstayC.letD.live
2.A.thatBthisC.itDit's
3.A.studentsBvisitorsC.teachersD.scientist
4.A.RateBwindow'sC.doorD.car
5.Agot.BarrivedC.gottoD.reachedin
6.A.SaidBWithC.AndD.before
7.A.otherBAnohterC.OthersD.Theother
8.A.passBpastC.passedbyD.passing
9.A.stoneBpocketC.watchD.time
10.A.andBbutC.soD.only