这些简单的玩笑之所以受欢迎，是因为这些游戏的环节强调了我们熟悉的情景，通过用关键字和短语，显然地勾画出了一个让人大笑的机会。

These simple jokes work because the knock-knock structure highlights familiar situations, USES only essential words and phrases, and clearly signals a laughing opportunity.

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使用以下的短语或技巧为任何电话情景做准备。

Prepare yourself for any telephone situation with the following phrases and techniques.

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这个短语可以用在个人情况和工作情景中。

This can apply to both personal and work situations.

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