问题描述：
英语翻译
it's 10 o'clock.
You must go to bed.
合并为一句
It's _______ ______ ________ to go to bed.
it's 10 o'clock.
You must go to bed.
合并为一句
It's _______ ______ ________ to go to bed.
问题解答：
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