I think you are at the end of your ________ this time and need to turn to Pro. Smith for advice.
The book was written in 1946, __________ the education system has witnessed great charges.
—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.