1.These trees can't be grown in such a cold as ours.
A.weather B.climate C.season
2.Traditonal folk arts of Tianjin like paper cutting at the culture show of the 2010 Shanghai World Expo.
A.are being exhibited B.is being exhibited.
3.Jack's younger sister is three years to him.
A.junior B.prior C.senior
4.He is out of work now but he gets a good from his investment.
A.wage B.salary C.income D.earning
5.During the period of recent terrorist activities ,people not to touch any unattended bag.
A.had always been warned B.were always being warned.