er和Sam的老师).7.___________________________(教师节)isonSeptember10th.8.___________________________________(学生们的桌椅)areverynew.9.Weareveryhappyon____________________________________(儿童节).10.Heisin_________________________________(老师的办公室)now.11.Pleaseopen______________________________________(教室的门).12.____________________________(赵敏的鞋)arewhite.13._________________________________(林红和张蔚的学校)isbigandnew.14.________________________________(John和Sally的母亲)areAmerican.15._____________________________(刘伟的妻子的朋友)isfromGuangzhou.16.______________________________(Tony哥哥的电脑)isbroken.17.It’s_____________________________(妇女节)onMarch8th.18.Arethese________________________________________(男生们的书包)?19.Thatis_______________________________________(Tom和李雷的教室).20._____________________________(我父亲的和她父亲的朋友)arefromBeijing.