改错 1.60students are playing on the ground.2.H

改错 1.60students are playing on the ground.2.H
became famous around fifty years old.
3.There are about two thousands workers in our factory
4.In the morning there are hundred of old people walking in the park.
5.The class begins at eight a.m.
6.Two fifth of the books are sold out.
7.The film will begin at three quarters past one.
8.The young likes playing football very much.
9.The danger has gone,so the worst are over.
10.She is a warm heart woman.
11.There is an alive fish in the pool.
12.The ill man nearly died.
13.I'll be free on the next Sunday.
14.The foreigners like those little beautiful Chinese paintings.
15.He was friendly on me.