my watch _ i'll have it repaire a.was broke b.broken c.broken down d.is worn为什么选C不选A?

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my watch _ i'll have it repaire a.was broke b.broken c.broken down d.is worn为什么选C不选A?
my watch _ i'll have it repaire a.was broke b.broken c.broken down d.is worn
为什么选C不选A?

my watch _ i'll have it repaire a.was broke b.broken c.broken down d.is worn为什么选C不选A?
break down(机器)发生故障,a.was broke 就有问题,即使改为was broken也不能选,因为一个句子中有两个谓语动词(was和have)不行,要用独立主格结构(前后主语不一致,所以这里用过去分词)