交际用语，选择最佳答案，并将其标号填入题前的括号内。
1. —"Whose shorts are these?"
—" ____."
A. I don't know
B. it's his shorts
C. I'm short
D. He's short
2. —"Would you like a cup of tea?"
—"____. I'd like a cup of coffee."
A. Yes, please
B. No, thanks
C. No, thank you
D. No, thank
3.—"Have a good trip!"
—"____."
A. That's all right
B. Thank you
C. You're welcome
D. Have a good trip, too
4.—"____?"
—"I need a postcard, please."
A. What do you want
B. What do you do
C. Can I help you
D. What are you doing
5. —"Don't run in the train, Danny."
—"____."
A. Sure
B. I'm sorry
C. It's great
D. Let's jump
6. —"When do you leave for Japan?"
—"____."
A. On January 21st
B. In January 1st
C. By train
D. With my parents
