Correct each sentence

1 Children will have to cook breakfast themselves.
2 Children, you will have to cook breakfast yourselves.
3 The computer turned itself off. What's wrong?
4 Nobody helped us , we did everything ourselves.
5 I like the film. - So do I.
6 I have seen the film. - So have I.
7 I have cleaned my room. So have I.
8 If I come early, I will wait for you.
9 I will switch off the computer before I leave the office.
10 The text is more difficult than the dialogue.