1) they were last in the library.
2) they are now in school.
3) tomorrow they will be in the theater.
4) currently it is not.
5) on Sunday, he will be at the concert.
6) last Saturday, he was at the stadium.
7) My brother is at school.
8) My brother was in the last movie.
9) my brother tomorrow at home.
10) you'll be home tomorrow?
11) it was yesterday in the park