－What are you interested in －__________.

The environmentalists said wild goats’______ on the vast grasslands was a goodindication of the better environment

The company has a free long-distance telephone number _____ customers may call with any question they have about its products[ ]

Please don’t step on the grassland. Can’t you see the sign “______ the grassland” —Sorry, sir! I didn’t see it.

If you_______ another chance tomorrow， can you do it better， Lucy— That’s for sure. Trust me!