they were busy yesterday evening.改为否定句

they were busy yesterday evening.改为否定句 They were busy the day before yesterday.改为同义句 They were in the park yesterday改为否定句 you were busy yesterday 改为疑问句,做肯定,否定回答 they were some famous singers at the concert yesterday 改为否定句 "They were here yesterday".改为一般疑问句,特殊疑问句和否定句. They were my friends 改为否定句 she did her homework yesterday evening (改为否定句） I did my homework yesterday evening.改为否定句 Paul did his home work yesterday evening.改为否定句 Ann stayed at home yesterday evening.(改为否定句） they were here yesterday变否定句和疑问句