---You look sad today, what’s      ?---I have a       throat.

---How many ________ are there in your class? ---25. And there are 20 girls.

 Please pick up the _______. Don’t keep it on the floor.

— Shall we go out for a walk?— Sorry. This is not the right _______ to invite me. I am too tired to walk.

In Britain ______are all painted red.