we:
1.we are friends.
2.weboth love singing.
3.we saw himyesterday.
us
1.The book was read by us.
2.They should thankusfor help.
3.He made us sad.
our
1.These are our books.
2.They used our pens.
3.Our books are new.
ours
1.These toys are ours.
2.It's his ,not ours
3.We will make them be ours.