英语题，填介词~~~~~求助~~~~

Hesufferedagreatdeal--with--acoughandwasn'tabletogotosleepforaweek.2.Thediseaseisspreadingquicklyandallthechildrenare-at---risk.3.Initially,Bobwantedtosign-up---forthematch,buthesoonchangedhismind.4.Asmanyastenmillionchildrenwillhavebeeninfected--with--thevirusbytheendofthedecade.5.Chickencanbeused--in--placeofbeefinmakingtonight'sdinner.6.--as--aresult,ourbeachesarefulloftrash,theseaispolluted,andmarinelifeisendangered.7.Iftheyaredeterminedtostopworking,theywilldosoregardless--of--whatthelawsays.8.I'dlovetotellyouwhathedidwithitbutImustnotgetdistracted--in--thetaskathand.9.Itwasthreemonthsbeforemyparentsfound--out--I'dbeengoingoutwithPeter.10.Thesuddenstartandquickspreadofthefirewiped-over--allthepeopleinthebuilding.11.Howmuchapersoncanearndepends--on-hisskill.12.Ihaven'tbeenabletofind---out--whobrokethewindow.13.ManyBlacksandotherminoritiesdecline,--in--fearofthegovernment,torespondtowrittenforms.14.Itwasn'tsomethingIfeltcomfortable-with--buteveryonetriedtomakeitaseasyformeastheycould.15.TheprofessoraskedBobtopass--on--theseChristmasgiftstohisclassmates;eachstudentwastogetone.