问题描述：
after ten hours they didn't find it any easier to get up in the morning
上面那句话就是found it was not ___for people to get up in the morning after ten hours' sleep.A:easier B:happier C:more important D:more difficult
上面那句话就是found it was not ___for people to get up in the morning after ten hours' sleep.A:easier B:happier C:more important D:more difficult
问题解答：
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