题目

---Look! Someone has broken the coffee cup!    ---Well, it ______ me    A. isn’t           B. wasn’t              C. hasn’t been        D. hadn’t 答案：B() 17. (2014 常州) 一When will the railway that connects the cities open?—   next year. Only two thirds been built.   A. Until;has   B. Until;have   C. Not until;has   D. Not until;have