句:You must (be joking).(be joking)能换成(play jokes) 如果不能,那么能换成什么短语?

you must be quiet here同义句 You must be on time for school.的同义句 连词成句,wrong something with be there you must You must be strong . you must be You must be hungry You must be joking You must be confident. You must be dreaming you must be careful you must be there on time.此句中为什么要用be ,get不行吗? you must be careful when you cross the street.(同义句) you must be joking改为同义句 you ___ ___ ___! you must be ___!(kid) You must be carful next You must be happy oh., you must be joking,救命 You Must Be Strong 歌词