children should ______ when cross the road a.carefully B.be

Be careful of children when ____the road A cross B you cross children should avoid _____ hurt when they cross the road be You should be careful when you cross the m____ road . Paul,______（be） careful when you cross the road. When you cross the road,be careful of ______. be carefully 和 be careful怎么用?When you cross the road,you mus ( )carefui when you cross the road.A Be do B Do you be C Do ___ careful when you cross the road. A. Do B. Do be C. Is D. People should cross the road at the ______(cross). Be carefully when ____ the road. be careful of the children ____ (cross)the road. should.you road the cross look when 连词成句