Tom, go to the office to fetch the papersWho would you rather with you, Wang Lin or Li Feng? —

This is quite a difficult problem and none of us could ____ a solution to it. [ ]

The square _____ by many volunteers every weekend when I was a small boy and now I’m one of the volunteers cleaning the square.

_________ that they lost the game, tears came down her face.

We should plant many trees. trees , air pollution.