There’s a lot to do. We can’t __________ to waste any time.

During the earthquake, many buildings fell down. But the people there didn’t hope.

Could you pass me _____glass on the table please?—Sure, but it’s _____empty one.

It’s good for you to ______ in class.— I think so. Thank you.

Have you finished your homework yet?– No, not yet. I think it’ll take me __________ half an hour.