問題詳情

9. There ______ a lot of trees around here, but there aren’t now.
(A) use to be
(B) used to be
(C) are use to be
(D) are used to be

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)