you should be careful.为什么要加be而不直接是you should careful.

you should be careful.为什么要加be而不直接是you should careful. You ( ) things.You should be careful. You should be more careful next time. You should be ________ careful.怎么填 You should(?)（be）careful.是什么 You should be careful when you cross the m____ road . you should ___ be careful about who you trust online. 将下列句子改为祈使句 1.You should be careful . 根据问句写答句 i think you should be more careful You should be too careful about eating.的汉语意思? you should be careful in your ____(choose)of friends. You should be careful when ______(cut) the cabbages.