Thomas Alva Edison didn’t “invent” the light bulb (灯泡), but rather he ______ a 50 –year –old idea, which is not well –known.
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.
By serving others, a person focuses on someone other than himself or herself, __________ can be very eye-opening and rewarding.
The village has developed a lot __________ we learned farming two years ago.