The book also has a full answer key to all exercises.

这本书也有一个完整的答案主要向所有演习。

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When you visit the gym, make sure there are staff members available to answer your questions, demonstrate exercises, or show you how to use the equipment.

当你到了一个健身房，要确保那里可以找到职员以便回答你的问题、做示范练习或者向你展示如何使用那些设备。

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You can repeat exercises, answer the same questions, listen to the same sound files until you feel comfortable with them.

你可以重复练习，回答同样的问题，听同样的音频文件到觉得很顺耳为止。

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