高三语法题（不难）Severalweekshadgoneby()Irealizedthepainting,wasmissingAasBbeforeCsinceDwhenJill'sleftherhusband,but()youbalmeherafterthewayhetreatedher.AcanBshouldCmustDneedWithsomanylettersand

　　高三语法题（不难）

　　Severalweekshadgoneby()Irealizedthepainting,wasmissing

　　AasBbeforeCsinceDwhen

　　Jill'sleftherhusband,but()youbalmeherafterthewayhetreatedher.

　　AcanBshouldCmustDneed

　　Withsomanylettersandnewspapers(),thepostofficehadtofindsomevolunteerstohelptodothework.

　　AdeliveringBdeliveredCtodeliverDhavingdelivered

　　Thetrain()atthepresentspeeduntilitreachesthefootofthemountainataboutnineo'clocktonight.

　　AwentBisgoingCgoesDwillbegoing

　　可第二题的答案是A啊为什么啊还有第一题sincewhen为什么不可以啊