A: Is dinner ready, Mom?
B: Not yet.
A: Do you need my help?
B: Sure. Can you the vegetables?'
A: No, I don't want to wash the vegetables. They are so dirty (脏的).
B: I have salt.
A: Let me go and some.
B: OK.
A: Do you have any ?
B: Yes, I have some sugar.
A: Do you any tofu?
B: Yes, I need some tofu.
A: So I'm going to buy some and tofu for you.
B: Yes. Be quick, please.
