那是一个书包吗？不，它不是。应该说：
A. Is that a schoolbag?No, it isn’t.
B. Is this a schoolbag? No, it isn’t.
C. Is that a schoolbag? Yes, it is.
当询问面前的牛奶是不是对方的，可以说：
A. This is your milk.
B. Is this your milk?
C. Is that your milk?
当迈克上课迟到了，他应该和老师说：
A. I’m sorry, Mr Green.
B. Come in, please.
C. Thank you.
萍萍在课堂上讲话，你可以对她说：
A. Don’t stand up in class.
B. Don’t talk in class.
C. Don’t sleep in class.
外面风很大，你可以对妈妈说：
A. Close the window, please.
B. Open the door, please.
C. Open the window, please.