They must have been here the day before yesterday,----------

They must have been here the day before yesterday,---------- 几道英语竞赛题,1、They must have been here the day before yeasterday Joy _____ here the day before yesterday. He must have lost the key the day before yesterday,_____? He must have been here yesterday,( 改为反义疑问句 (They must have been there yesterday ,______they?)能用"weren't I was here the day before yesterday.(改否定句) I was here the day before yesterday 改为否定句 The day before yesterday. the day before yesterday They will drive home the day before yesterday. They __(not be)at school the day before yesterday.