being careful when you cross the street 用being正确吗 如果不正确为什么

being careful when you cross the street 用being正确吗 如果不正确为什么 alway be careful about being too precise 最好能给我讲一下语法.Children are warned to be careful when ______ the street.A crossing B.crossed C.being crossed --------can avoid making mistakes.A Being careful B Be careful C Being carefully DBe carefully 谢 we should ( ) careful when we soeak急!~~~~~~~~~~ Be careful when you c_______ the street be careful when you corss the m___road Be careful when you walk意思 Be careful when you ____the hill be careful when the floor is wet Be careful about point ,not being falling to you! She is careful.和She is being careful有什么区别? careful I have to be very careful being with them.being with them做什么成分 为什么用being的形式. You must take careful when you walk across the street中的 careful 是否正确 be careful when you go --------(cross) the road 改错 Do be careful when do your homework You should be careful when you cross the m____ road .