When the fire d----- is high,we must be careful.We must not
When the fire d----- is high,we must be careful.We must not
So we must be careful when we use the Internet.
We must be careful when we( )the road.
填空 we must be careful when we___ the road
We must ___(be) careful.
We must be very careful when we go across the m___ road
We must be careful when you go _____(cross) the road.
sometimes fire is useful,it's ()we must be ()w
We must be careful.怎么改祈使句
we must take the lift downstairs when there is a fire.这句英语句子
we must take the lift downstairs when there is a fire.(改错)
We must take the lift downstairs when there is a fire.