Mr. Smith gradually _____ a knowledge of the subject.
Those successful deaf dancers think that dancing is an activity ________ sight matters more than hearing.
It is reported that two schools,_______ are being built in my hometown,will open next year.
Some pre-school children go to a day care center, __________ they learn simple games and songs.
He was educated at the local high school, ______ he went on to Beijing University.
The road conditions there turned out to be very good, ____ was more than we could expect.