——————(step)on the snakes is very dangerous for people该怎么做,

问题描述:

——————(step)on the snakes is very dangerous for people该怎么做,

Stepping
动名词短语做主语可是老师给我们的答案是to stepping我是英语老师!你听错了! 要么是不定式To step, 要么是动名词Stepping. 后者好一些谢谢啊!不客气