每一个人都必须细心,当他们横路时.Everyboby___ ___ ___When they cross the road.
问题描述:
每一个人都必须细心,当他们横路时.Everyboby___ ___ ___When they cross the road.
答
should be careful
每一个人都必须细心,当他们横路时.Everyboby___ ___ ___When they cross the road.
should be careful