It is( )for us to cross the street when the traffic light are red .括号里填什么?越快越好是七年级英语暑假园地上的!

问题描述:

It is( )for us to cross the street when the traffic light are red .括号里填什么?
越快越好是七年级英语暑假园地上的!

time

unsafe /dangerous

Dangerous
危险

space