happy: Todany is a happy day.
10th:I want to choose the 10th colour.
anniversary:The school is celebrating the 100th anniversary of the brith.
may:May I have borrow your book for a while?
our:He is our son,do you remember?
love:I believe he is my true love.
and:I like swimming,and you?
companionship:The real companionship is priceless.
last:Last year when I saw him,he is still healthy.
forever:The leader will live in our memory forever.