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John is seven years old. He is a polite(有礼貌的) boy. So his friends and his parents like him very much.

It is Saturday today. John is at home. He is watching TV and his sister is doing her homework. At 10: 00 a.m., his father comes back with some apples. John likes apples very much and he wants to eat one. His mother asks, "Which apple do you want, John?"

"The biggest one, Mum."

"What?" says his mother. "You should be polite and want the smallest one."

"Should I tell a lie(说谎) just to be polite, Mum?" John says.