I can swim now but couldn't swim when l --- ten years old.

问题描述:

I can swim now but couldn't swim when l ___ ten years old.
1个回答 分类:英语 2014-11-10

问题解答:

我来补答
was .我现在会游泳,可十岁的时候可不会.十岁的时候是过去,所以用am的过去式was
 
 
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