--- There must be a dozen pens in this house but I can never find one when I need one. --- Keep looking. _____ is sure to turn up.
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.
All the neighbors admire this family, ____ the parents are treating their child like a friend.
The growing speed of a plant is influenced by a number of factors, ____ are beyond our control.