问题描述：
she would have come to help us with the party为什么用 (would have come),
why isn't Lisa here?
she (would have come) to help us with the party,but unfortunately she was ill in hospital.为什么用 (would have come),
why isn't Lisa here?
she (would have come) to help us with the party,but unfortunately she was ill in hospital.为什么用 (would have come),
问题解答：
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