问题描述:
The doctors did everything they-----save the---old woman but failed.
A could;dead B could to;dead C could;dying D could to;dying
前者为什么选could to?
could后为什么加to?
to 在这里的用法?
A could;dead B could to;dead C could;dying D could to;dying
前者为什么选could to?
could后为什么加to?
to 在这里的用法?
问题解答:
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