________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