(you must cross the strees )怎么改为否定句

You must look before you cross the road改为祈使句 you must be ____(care)when you cross the street. You must look right before you cross the road. you must look c___ before you cross the road. You must look c______ before you cross the road. you must look right before you cross the road 是什you must look right before you cross the road while___(cross)the street,you must be careful you must look oth ways before going___(cross)the street. (you must cross the strees )怎么改为否定句 You must be careful when you cross the road.(改为祈使句）__________________ when you cross the road. 英语连词成句 must,you,right,look,road,the,cross,before,英语连词成句must,you,right,look,road,the,cross,before,you（.） When you cross the street,you must pay ( ) (注意) to the traffic lights 修改错误You must wait the green light when you want to cross the road.____ 填写正确形式When you walk ______(cross)the street ,you must be careful. You must be careful when you cross the street.改为祈使句 you must look both ways before you go ____(cross,across)the road you must be careful when you cross the street中可以用if替代when吗 You must be ___when you cross the street 可以是carefully吗？