________alotoftreesinthisarea,butnowwecanseeatallbuildi...

問題詳情：

________ 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

知識點：動詞時態

題型：選擇題