根据所给语境，选择适当的答案。
1. 当你上学迟到时，你可以这样对老师说：
A. It doesn't matter.
B. I'm sorry. I'm late.
C. That's all right.
2. 当别人对你说 " What's your job? ” 你可以说：
A. I'm Kate.
B. I'm a doctor.
C. I'm Li Ming's mother.
3. 当别人对你说“Let's go skating!”，你不想去可以说：
A. Sorry, I am busy.
B. OK, let's go.
C. That's a good idea.
4. 当你的朋友说“I've got a bad cough.”，你可以说：
A. How are you?
B. I'm sorry to hear that.
C. How do you do?
5. 开学后，老师第一次见到同学们，会说：
A. What's your name?
B. Welcome back to school, boys and girls.
C. Goodbye boys and girls.
6. 你想知道有多少把椅子，可以说：
A. How many chairs do you have?
B. How many chair do you have?
C. Where are the chairs?
7. 您想告诉别人“今天是星期一”时，可以说：
A. Today is Monday.
B. Today is Tuesday.
C. What day is today?
8. 你想对别人说“对不起”，可以说：
A. Thank you.
B. Sorry.
C. Goodbye.
9. 你想让别人看大象，应该说：
A. Look at the elephant.
B. Look the elephant.
C. Look after the elephant.
10. 你想问别人，“你在哪儿”时，应该说：
A. When are you?
B. Where are you?
C. What are you?
11. 你想对一个熟人打招呼，应该说：
A. How do you do?
B. Where are you?
C. Hello!
12. 下午与朋友见面时，应该说：
A. Good morning.
B. Good afternoon.
C. Good evening.
13. 你有事麻烦别人，可以说：
A. Excuse me.
B. You're welcome.
C. I'm sorry.
14. 你想说“我有6支铅笔”时，应该说：
A. I have six pencils.
B. I have six pen.
C. There're six pencils.
15. 你想告诉别人“我很高”时，应该说：
A. I'm tall.
B. I was tall.
C. I am short.
