Question

How did the instructor "built a swimmer" out of Douglas ???​

Answer 1

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The instructor built a swimmer out of Douglas piece by piece. For three months he held him high on a rope attached to his belt. ... The instructor taught Douglas to put his face underwater and exhale and to raise his nose and inhale. Then Douglas had to kick with his legs for many weeks till these relaxed.

Answer 2

Explanation:

The instructor built a swimmer out of Douglas piece by piece. For three months he held him high on a rope attached to his belt. He went back and forth across the pool. Panic seized the author everytime. The instructor taught Douglas to put his face under water and exhale and to raise his nose and inhale. Then Douglas had to kick with his legs for many weeks till these relaxed. After seven months the instructor told him to swim the length of the pool.