People around the country were excited __________ the astronauts came back to the earth safely.
If I take this medicine twice a day, it should _______ my cold.
The children ran away from the orchard(果园)________ they saw the guard.
In China, the education is divided into three _______: basic education, higher education and adult education.
By the time he was twelve, Edison _______ to make a living by himself.
The two sportsmen congratulated each other _______ winning the match by shaking hands.