防止基坑的边坡坍塌的措施不包括（）。
A.放足边坡
B.设置支撑
C.人工挖土
D.降低地下水位
参考答案：C
They hurried to catch the train________ at 4 : 15 in the afternoon.[ ]
A. thanks to leave
B. due to leave
C. because of leaving
D. due to leaving
