1. Are the goods to be flown or s _____________?
2. Our country has sent up several man-made s ___________to circle the earth.
3. About 30 million people die of s _____________ each year; they really have nothing to eat.
4. Though _______________(包围) by the enemy, the brave soldiers were not nervous at all.
5. The policeman told the stranger to go s ______________to the south of the city so he could find the railway station.
