19. The orphan was brought _____ by the villagers and 20 years later he became the village Party branch secretary.
A successful scientist needs _____ if he wants to make hypothesis (假设) of how processes work and how events take place.
This year the farmers were just able to gather in the _____ before the fine weather came to an end.
He hated the war so much that he decided to leave the army _____.
We suddenly saw the bus about to leave and had to run _____ to catch it.
If we can _____ our present difficulties, then everything should be all right.