Was Tom a member of Greener China?—Yes, he has ___ Greener China for 5 years.

Why didn’t you go to Eric’s party?—I’d love to, but he didn’t me.

The Internet is really ______ to us. We can easily find the information we need.

There is ______ old park near my house.

Pollution is a serious problem. Scientists have _____ some good ways to save it.