clean the windows为什么要加s

clean the windows为什么要加s clean the windows是什么意思 let,s clean the windows wash the windows和clean the windows有什么不同 改错 The windows is clean.the door is clean also. clean the windows能不能把s去掉 pumpkin和clean the windows是什么意思 clean the windows now改为否定句 He___( not clean )the windows now. l can empty the trash and clean the windows The students clean the windows every day(改为被动语态) sweep the floor、clean the windows、wash clothes动词原形 with,clean,you,can,windows,me,the(连词组句) S_____ I clean the windows every day?填空. brother,can,the,my,windows,clean连词成句 go and clean the windows.怎么改否定句? Don‘t clean the windows now 改为肯定句RT 哪种表达方式正确 a.The windows in my classroom are clean. B.The windows of my classroom are clean