Put a line through the incorrect sentence.
1 You should to do all your homework. / You should do all your homework.
2 I not have to go to school today. / I don’t have to go to school today.
3 You shouldn’t be nervous. / You shouldn’t being nervous.
4 I might to have an exam today. / I might have an exam today.
5 Our teacher may be away today. / Our teacher may to be away today.