Mrs. Smith, please teach me how to draw on the computer today. — Oh, no._______. You have to get familiar with the keyboard first.

We’ve walked for a long time.Let’s stop ____a good rest

You can’t ______ your cat here.

Our teacher told us that light _____ much faster than sound.

Most scientists seem to agree that ________ certain limit should be set on ______sale of cars to ease air pollution.