当你进了Ms.Miller的办公室，她说：Sit down,please!你应该回答：
A.Yes,I sit down. B.Thanks. C.please
—________ this? —It’s an orange.
A. What color is B. What’s C. How
—Spell “color”，please. —___________.
A. Yes, I do.
B. Yes, I am.
C. C—O—L—O—R.
—Good morning, Alice. —____________.
A.Thank you.
B.Good morning,Gina.
C.How do you do?
—What’s this? —It’s ________ pen.
A. a B. an C. /
在下面的四线三格内写出五个元音字母的大小写（5分）
