It’s a good idea to send the old books _________the children who need them.

___________ is the river –It’s 2,000 kilometers .

We all know it will be next June we can really have a rest.

I’m amazed that Tom is only 25. I thought he was_______, for he seems to be in his thirties.

The number of giant pandas is becoming _____________ because there are fewer and fewer living areas.