问题描述：
新概念英语2册54课问题 The doorbell rang loud enough to wake the dead.
有一句话是：The doorbell rang loud enough to wake the dead.
能否改成：The doorbell rang loud enough to wake up the dead.
请问为什么?
有一句话是：The doorbell rang loud enough to wake the dead.
能否改成：The doorbell rang loud enough to wake up the dead.
请问为什么?
问题解答：
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