As the world’s population _____ becoming ______, we have to do something to change the situation.
Everyone in my family _________ TV.
---Excuse me. Where is your teachers’ office? ---________, sir. ---Thanks a lot.
Simon likes playing ____ football but Sandy likes playing _____ piano.
________ is fun. I like ________.
It’s 9:00 now. It is time for us _____ sports.