________its low cost, the appeal of iron as a building material lies in its strength, its resistance to fire, and its potential to span long distances.
As a driver, you shouldn’t speed limits in the centre of the city.
Are you concerned your mother when she is out in Africa?
The visitors here are greatly impressed by the fact that people from all walks of life are working hard for new Jiangsu.
Tim is in good shape physically he doesn’t get much exercise.
—Jack, you seem in high spirits. —We won the match 4-0.