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My mother goes shopping at a supermarket today.

A＝Assistant(售货员) M＝My mother

A:  May I help you?

M:  Yes, please. I want to buy some vegetables.

A:  The potatoes are very fresh(新鲜的)today.

M:  I like potatoes, but my son doesn't.

A:  How about some tomatoes? They are good for your health(健康)．

M:  OK. They are my son's favourite. Five tomatoes, please.

A:  OK. Your bag, please.

M:  Oh, no. I have my shopping bag.