Mike has made many friends since he to China.
Our country________the sixth population census(人口普查)already.
Nick is never late for work.He always gets to the office________. A.on time B.in time C.at times
—Why was your class so lively,Mr.Li? —Oh,my students________in groups about the coming school trip.
—The windows are broken and need to be repaired. —I think so.They can hardly________the cold now.
Most people are________building a paper factory near here.They are worried the river will get polluted.