______stopping polluting the earth______hope to live in a better environment．

Tom and Jenny are in the same school. And _________ like sports very much.

To help a friend solve the problem troubling him,.

I’m not sure when the 6th national population census (人口普查) completed?—_______ November, 2010. [ ]

Did you see him yesterday?—No, when I got to the airport, he a taxi for home.