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A. Excuse me.B. I'm sorry to hear that.
C. Thank you.2. 当你接受对方的邀请时应该说：
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A. With pleasure.B. Sorry, I am not.
C. Yes, Please.3. 当你看见对方不舒服你应该说：
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A. What are you doing?B. What's the matter with you?
C. Where are you going?4. 如果你想邀请别人加入你们的活动，你应该说：
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A. Can you help me?B. Come to my home.
C. Will you join us?1-4 B A B C