在装药地点20m以内，矿车、未清除的煤、矸或其他物体堵塞巷道断面1/3以上，严禁装药。（）
参考答案：对
— Thank you for the great trouble you have taken _____ me with my English?
— Think nothing of it! [ ]
A. with helping
B. to help
C. in helping
D. helping
