Mr Zhou is very _______ with his students. He asks them not to be late. If they are late, they have to stay outside the classroom until the next class.
—Is that your father?—No. It’s my uncle, my mother’s _____.
—Does Bob have vegetables for dinner?—______. But his sister has some carrots.
—Excuse ______. Is this ______ book?—Yes, thanks.
—Is that ______ volleyball?—Yes. Bill likes playing ______ volleyball. ______ volleyball is his.
---I’ve just heard that the lecture (讲座)to be given by Ma Yun,the Alibaba CEO,has been cancelled(取消).---Oh , no!_____________________________