a lot of trees in this area but now we can see a tall building instead.A. There used to

问题补充：

a lot of trees in this area, but now we can see a tall building instead.

A. There used to have

B. There used to be

C. There is used to having

D. There is used to being

答案：

A. There used to have

(答案→)B. There used to be

C. There is used to having

D. There is used to being

解析：考查there be结构。句意“这个地区过去有很多树木，但现在，取而代之的却是一栋大楼。”“过去有......”用there used to be表示。There be结构不能和have混用，排除A、C；be used to doing sth.“习惯于......”，排除D。故选B。