1.He showed up at the house unexpectedly.
2.it turned out that he was a teacher.
3.she looked back and laughed.
4.it turned out that Columbus discovered America,and not India.
5.Turn off the computer,please.
6.Turn off the TV.
7.she again and again looked through the photo album it was the story of her life.
8.they all turned in the house,but not what is not found