49.You should have told me there was no class today. I —all the way
herethroughtheheavyrain.A.mustnothaverunB.neednothaverunC.shouldnothaverunD.cannothav...
here through the heavy rain.A.must not have run B.need not have run C.should not have run D.can not have run 为么选B不选C.50。___ your timely warning ,we would have been unaware of the danger.A.in spite of B.but for C.instead of D.As for为么选B而不选 D.
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