阅读下面材料，从题中所给的A、B、C、D四个选项中选出最佳选项。

    A woman was at the cinema, and she liked the film very much. But there was a man in the next seat, and he began looking on the floor under him. The woman was angry, but she can't speak loudly then.

    So she whispered, "What are you doing there?" "What are you looking for?"

    "A piece of hard chocolate," the man whispered to her, "I dropped (掉落) it on the floor."

    "A piece of chocolate?" the woman said angrily, "It's dirty now! Take this and be quiet, please! I'm listening to the film!" She gave the man a big piece of chocolate.

    "But," he man said, "my teeth are in the piece on the floor!"