You must be _(careful) than before.

You must be _(careful) than before. you must be careful 第一题：You must be careful before you( ) A.across B.crossing C. when crossing street,you must be careful you must be careful改为祈使句 You must always be careful with it . When____the work,you must be careful. you must be careful.为什么说careful没有be不能形成谓语,不是有must吗 you must be careful when you ___ with fireworks you must be careful when you （ ）the street You must before be carefully什么意思 You must first be finished before lunch.