— Mrs Smith is so nice a good teacher that we will remember her forever.

— Yes. She ____ give us help whenever we were in trouble. [ ]

A. must

B. might

C. could

D. would

在输油站的下列区域进行开挖作业属于破土作业的是（）

A.埋地电缆附近

B.没有地下设施的道路

C.地下管道附近

D.消防道路