There -------many old huts and houses in this area,but now there is quite a feww highrises here.A are B used to C have D used to be 为什么
问题描述：
There -------many old huts and houses in this area,but now there is quite a feww highrises here.
A are B used to C have D used to be 为什么
答
DThere used to be
there be 句型和used to do(过去常常)的结合，意思是过去那里曾经有...(但现在没有了).
Eg.There used to be a store on the corner .以前在这个街口有家商店。
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答
正确：D
这是个used to用于 There be 句型的结构,表示”过去有……“