Cách làm cho bạn:
1. d
A: Good morning, Ms Hoa.
B: Hello, class. Sit down , please!
2. c
A: May I come in?
B: Yes, you can.
3. b
A: Is this Ben?
B: No, it isn’t. It’s Bill.
4. a
A: May I speak Vietnamese?
B: No, you can’t. Speak English, please!
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