把下列词组组成名词所有格.
问题描述：
把下列词组组成名词所有格.
1.the teacher/books________
2.half an hour/walk______
3.Mary/room________
4.yesterday/evening paper________
5.Gauss/teachen________
6.a map/China______
7.a teacher/English_________
8.an old frieng/my aunt's_______
答
1.the teacher' books
2.half an hour's walk
3.Mary's room
4.yesterday's evening paper
5.Gauss's teacher
6.a map of China
7.a teacher of English
8.an old friend of my aunt's