请把英语句子改成正确的！

1.在in的后面加the
2.milks去s
3.a放到bed的前面

1.I sit at the front of the classroom.
at表示在室内，而in只在室外。
2.I drink milk every morning.
milk 没有复数形式。
3.I made bed for the/a guest.
原来的句子意思是你把床当成客人了。

1. in the
2. milk
made bed for

1.in 后加the
2.milks 改milk
3.bed 后加for

第一个句子对
第二个把milks的s去掉
第三个把a放到bed的前面

1.I sit in the front of the classroom.
2.Every morning I drink milk.
3. I made bed for a guest.