be careful when you corss the m___road
Be careful when you c_______ the street
You should be careful when you cross the m____ road .
you must be careful when you ( )the street
be careful when you are crossing the street.可以改写成be careful
Be careful when you are crossing the street.
You must be careful when crossing the street.改为祈使句
Be careful when you go across the bridge.
Be careful when you walk cross the road改错
Be careful when you walk ____ the street
.Be careful when you come____the street,because the traffic
Paul,______(be) careful when you cross the road.
连词成句:cross,be,the,when,careful,you,street