There a pond with fish in my garden in 2006.

________ of the city was covered with the heavy smog.

. — They suggest the number of cars should be limited to stop air pollution. — ____, the idea is not practical.

It was a great trip, ______ we didn’t enjoy it ______ the beginning. [ ]

Volunteering is becoming popular in China .— Yeah, people are now aware that helping others is helping themselves.