I hatewhen young people speak to the elderly in a rude way

I hate___when young people speak to the elderly in a rude way.A.this B.that C.it D.one

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I hate_C, it __when young people speak to the elderly in a rude way. it 代替“young people speak to the elderly in a rude way”又如：I hate it when people speak with their mouth full.

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it!

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B.that

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B