please be careful when you drive your in the snow.这里的 be 是什么

please be careful when you drive your in the snow.这里的 be 是什么 Please be careful ( )your things when you please be careful when you drive in a fog day错在哪 关于英语短语的问题Be careful when you drive.Keep in mind every carele Please be careful when you ______ the crowded street. Please be careful when you go a( ) the road when you are in the forest,please be careful,wood ______fire When you drive a car in England,you have to be careful YOU CANNOT BE ? CAREFUL WHEN YOU DRIVE A CAR You cannot be too careful when you drive car. 英语翻译You must be careful when you are there,because the drive Be careful when you c_______ the street