选择正确的答案。
1. 熟人之间见面问候时，常说：
A. I'm going to school.
B. How are you?
2. 你邀请Mike去画画，你说：
A. Let's paint!
B. Let's play!
3. 你想看看陈洁的紫色蜡笔，你说：
A. Show me your green crayon.
B. Show me your purple crayon.
4. 你想把Miss White介绍给Mr Black，你说：
A. Mr Black, this is Miss White.
B. Miss White, this is Mr Black.
5. 你告诉John你的旗子是红白相间的，你说：
A. My flag is red and yellow.
B. My flag is red and white.
