Our teacher said sound___much more slowly than light.

Modern equipment and no smoking are two ofthe things I like ____ working here

The class ______ big. Now the class_______ practicingswimming.

You never feel worried before an exam, how can you do that —Well, I’ve been working hard all the time. Surely I ______ any exam.

Steven Hawking’s conclusion about the Black Hole is a little _____, but it has been accepted by most of the world.[ ]