选择合适的选项补全对话。
A. Because I like swimming. B. I usually go swimming on Mondays.
C. Sure. Let's go swimming next Monday. D. No, I don't. E. I like summer best.
A: Hello Tommy! Which season do you like best?
B:____
A: Why do you like summer best?
B:____
A: Do you usually go swimming on the weekend?
B:____
A: When do you usually go swimming?
B:____
A: Do you want to go swimming with me?
B:____
液，不用其他试剂，就可将它们区别开的是 
硝酸钠