Fill in the sentences according to the context, so that the context is coherent and the sentence pattern is consistent. (6 points)
Not long ago, I saw a couplet on the forum of China Tai Chi Network: Stand firm on your heels and support your spine, broaden your horizons and calm your mind. This couplet perfectly combines the essentials of boxing practice with the principles of life. Practicing boxing is the same as being a human being. The first thing to avoid is frivolity, and the stance should be stable;
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Reference answer: No matter how trivial it is, the backbone Be upright; avoid being unbalanced and be calm.
(So ??cute 1104)