Are Jim and Tom in the classroom— ____. Look! The students are all playing outside.

Is there _____in today’s newspaper —- Yes, quite a lot.

Look! Someone ________ the floor.–Well, it wasn’t meI went shopping just now

The test not only helps make our _____ acquired knowledge permanent, but also enables us to find out what needs to take more time to improve

“I’ve never eaten a hamburger”— “_________ have I”