Tom has been in the factory _________he left school.
---Mum, May I go out to play?---Sure, If your homework ______, you may go out to play.
The man who lived on the lonely island thought he would never______.
Mrs. Green has been living ___ for two years. But she doesn’t feel ___ because she has many friends.
---You’ve dropped _____ “s” in the word “acros”---Oh, ____ letter “s” should be doubled like this “across”.
They lost the match, ______ we know they did their best.