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sat语法FabricwasveryexpensiveintheUSbeforetheIndustrialRevolution,thisiswhyscrapsweresavedandrecycledintosuchitemsaspatchworkquiltsanddollclothes.为什么thisiswhy要改成andso

题目详情
sat 语法
Fabric was very expensive in the US before the Industrial Revolution,this is why scraps were saved and recycled into such items as patchwork quilts and doll clothes.
为什么this is why 要改成and so
▼优质解答
答案和解析
因为一句话不能有俩动词,所以必须用and 连接.当然,and so 好在它更简洁.