Yourfatherisquiteagoodswimmer.--Sureheis.Heofen-------whenhewasyoung.a.swimsb.swamc.swum说明理由
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题目内容:
Your father is quite a good swimmer.--Sure he is.He ofen-------when he was young.
a.swims b.swam c.swum 说明理由
优质解答
b.swam
when he was young是一个一般过去时态
swims 是现在时
swum 是过去分词
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