将以下的句子改为同义词：
问题描述：
将以下的句子改为同义词：
1.It's time for bed now.
2.The changjiang Rive is longer than the Yellow Rive.
3.The sun is bigger than the earth .
4.The earth is bigger than the moon.
5.Today is colder than yesterday.
如果非常好的话另加5-10分
答
It's time to fall asleep nowThe Yellow river is shouter than Changjiang RiverThe earth is smaller than the sunThe moon is smaller than the earthYesterday is warmer than today