Мне надо все ответы (were you at shool yesterday? ,was your mother at home on saturday? ,were you with your friend last night? ,were you in bed early on sunday?

1) Yes, I was. I was at school yesterday.
2) Yes, she was. My mother was at home on Saturday.
3) No, I wasn't. I wasn't with my friend last night.
4) Yes, I was.   I was in bed early on Sunday.