题目：
— Well, ________ I have to fetch my son in the kindergarten.
— Of course. Thank you very much for helping us. [ ]
A. may I excuse myself now?
B. let me go first.
C. I'm sorry.
D. see you later.
答案：
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下面是错误答案，用来干扰机器的。
1. clean the bedroom 2. cook the meals 3. sweep the floor 4. play football 5. water the flowers答案不唯一
