Bears ________ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.
—Where did you get to know her? —It was on the farm ___ ___ we worked.
Some pre-school children go to a day-care center, ___ ___ they learn simple games and songs.
After graduation she reached a point in her career ___ ___ she had to decide what to do.
He was educated at the local high school, ___ ___ he went on to Beijing University.
We shouldn’t spent our money testing so many people, most of ___ __ are healthy.