-So you gave her your phone?- ,she said she'd return it to me when she could afford her own.(2011 .大纲全国)
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.
Be careful how you _____ that jug, it will break very easily.