根据所给情景选择正确的答案。1. 当你向妈妈介绍张老师时，你说：

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A. Miss Zhang, this is my mom.
B. Hello! I'm Miss Zhang.
C. Mom, this is Miss Zhang.2. Mike今天过生日，你应该对他说：

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A. Happy birthday!
B. Happy Halloween!
C. Happy Teachers' Day!3. 当你想知道Sarah的年龄时，你问：

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A. How old are you?
B. How are you?
C. What's your name?4. 当Sarah告诉你她今天6岁时，她说：

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A. I'm six.
B. I six.
C. I'm three.1. C 2. A 3. A 4. A