找出下面句子中的错误,并改正在后面的横线上.
1.I read a interesting storybook yesterday._______
2.I will go to Guangzhou to see my grandma with my family yesterday.______
3.There were no factories 50 years ago.There weren't many people also.________
4.Mr Smith doesn't go to school in Friday.______
5.Today is very hot,Tom is swiming in the pool.______