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.