We must be careful,a lion escaped from the zoo.这个句子不对吧?逗号前后都是完成的句子

We must ___(be) careful. We must be careful.怎么改祈使句 So we must be careful when we use the Internet. It's ___(ice).We must be careful. you must be careful We must be careful when we（ ）the road.A.across B.crossingC.cross D.Very good We must be careful,a lion escaped from the zoo.这个句子不对吧?逗号前后都是完成的句子 it's more () to climb that mountain.We must be careful.A,easier B,busier C,most busy D,busiest We must be careful with strangers.（划线部分提问）---- ---- we be carefulwith? We must be careful when we play sports. 变为一般疑问句 We must be very careful when we go across the m___ road When we write,we must write as_______as we can.a、careful b、 carefully c、 more careful d、more carefully When the fire d----- is high,we must be careful.We must not have c--- in the countryside.We must put our rubbish bin.At home ,we must not cook w--- an adult,We must not play near a fire ,It's everyone‘s job not to s----- a fire.首字母填空 must be,all,fires,we,careful,and,never,start连词成句 We must be careful when you go _____（cross） the road. we must be careful () fire 是用介词,用by对么?请问填什么. when _a diary ,we must be careful about what to write down是个完形填空 we must be careful with electricity 对划线部分提问划线的是electricity