形容词+ing 例子 be safe driving ,be careful driving,safe 和careful

you can't be too careful when driving. a bus______(drive)must be careful when he is driving.用括号内的单词 选择英语卷子1.A new driver can not be ___ careful in driving a car one can't be careful when he is driving a car,( 反意疑问句 be careful doing和be careful to do的区别? be careful of和be careful with有何区别? be careful with 和be careful about的区别是什么 请问：be careful with和be careful of的区别 don't be careful和be not careful的区别 be careful of和 be careful with的区别,造句 Be safe!是什么意思? be careful with,be careful of