给下列句子选择适当的答语。（每个选项只能选一次）
A. No, thank you.
B. It is dancing.
C. They are drinking milk.
D. They are doing tai ji quan.
E. Of course.
1．What are Tom and Sam doing? （_____）
2．Can you go to buy some food? （_____）
3．Do you want some juice? （_____）
4．What are they drinking? （_____）
5．What is the horse doing? （_____）
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