给下列句子选择恰当的答句。
A.Thank you.
B.On the teacher's desk.
C.Wow! It's so big.
D.A teacher's desk and many desks.
E.OK.
【小题1】Where is the green book? (______)
【小题2】Let me help you. (______)
【小题3】Look, we have a new classroom. (______)
【小题4】Close the window. (______)
【小题5】What's in the classroom? (______)