I．选择填空。(10分)
( ) 1. ________you know Peter? He is very short.
A. Do B. Are C. Is D. Does
( ) 2. - ________________
-That's Mary.
A. What's she like? B. What does she do? C. Who's that? D. How old is she?
( ) 3. -Why do you like him?
-________ he looks so serious.
A. So B. Because C. When D. How
