一.单项选择(30分)。
1. How is your grandmother, Tom? ________.
A. She is 62 years old B. She is OK C. I'm fine D. Sorry
2. There is ____ “u” and _____ “s” in the word “USA”.
A. a , a B. an, an C. a, an D. an, a
3. ______ are these black socks?
A. How many B. Where C. How much D. What