6、;beforeB.hidaway;beforeC.hidaway;whenD.werehiding;as15.Canyoudealwiththetroublethatyouhave_____theexperiment?A.doingB.todoC.doneD.do16.ThespeakerspokesofastthatIcouldn’t_____whathetalkedaboutatthemeeting.A.getalongwithB.calmdownC.gooffD.setdown17.I______backpainforyears.A. have sufferedfr
7、om B. havesuffered C. hadsufferedfrom D. hadsuffered18.Therehasbeen______accidentsonthehighwaybecauseoftheheavyfog.A.akindofB.aseriesofC.apairofD.apieceof19.—Let'sgoswimming,shallwe?—_______.(上海春季)A.It'smypleasureB.Itdoesn'tmatterC.IagreewithyouD.Yes,let'sgoShede