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  3. He was a good swimmer, so he______swim to the river bank when the boat sank.

He was a good swimmer, so he______swim to the river bank when the boat sank.

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问题 He was a good swimmer, so he______swim to the river bank when the boat sank.
选项 A、could
B、might
C、succeeded to
D、was able to
答案D
解析 在表示已经“设法或成功地做了某事”时，用“was(were)able to”，不能用could to，但是，在表示能力时，can和be able to可以互换使用。
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考研英语一

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