________alotoftreesinthisarea,butnowwecanseeatallbuildi...

问题详情：

________ 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

【回答】

B

知识点：动词时态

题型：选择题