下列字母书写格式正确的是 ____。
A. 
B.
C.
下列各组字母中全部是元音字母的是 ____。
A. a, e, o, r B. a, i, u, e C. o, u, e, n
—____ you Mingming?
—Yes, I ____.
A. Are; are B. Am; am C. Are; am
—____
—Fine, thank you.
A. How do you do? B. How are you? C. Are you Mr. Wang?
Mom, this is my teacher, Miss Lin. Miss Lin, ____
A. thank you. B. how are you? C. this is my mom.
—Welcome to Beijing!
—____
A. Welcome to Beijing, too. B. Thank you. C. Fine, thank you.
