第一题：You must be careful before you( ) A.across B.crossing C.cross D.walk cross第二题：---Do you know ( )---It is about 10 minutes' walk from hereA.how far is the post officeB.when does the post officeC.how far the post office isD.when the

you must be ____(care)when you cross the street. You must be more (care) next time怎么变 You take care We must be strong and carry on, You must be very ____ ,or you will make many mistakes.(care) I think you must be ()(care)with your coat怎么填 I think you must be busy at work,and your homework.Care for your health是什么意思. what i care,must be happy,please! you must be_____(care) next time.为什么 You must take good care ( ) young children You must good care （ ） young children. You must finish it ____(care) You must be very （）when you cross the busy street.A)care .B)careful .B) carefully随便说明为什么. You must be strong . you must be You must be hungry You must be joking You must be confident. You must be dreaming