Third Conditional

Hello!Today my homework about 3d conditional. I haven't got a teacher. So your help means a lot to me.Conditionals 3 make 10 sentences.1 What would he have done if he have known everything.
2 If he hadn't been teased all the time he might not have killed anyone.
3 If his colleague hadn't given him a gun, he wouldn't have been fired.
4 If he had known that his mother was insane, he might not have spoken with Tomas.
5 He could have become a good comedian, if he hadn't been mentally ill.
6 What would he have done if he had found someone who could help him.
7 What kind of words would he have said if she had wanted to know him better.
8 He might have had some extra money if he had changed his job.
9 He could have had a better one if he hadn't been hit on the head when he was a boy.
10 Even if he'd had Caravadjo to make his makeup, he wouldn't have looked better than he was in that movie. Thanks a million.