The teacher spoke very slowly ____the students could understand everythinghe was saying.
I ________ pay Tracy a visit, but I am not sure whether I will have time this Sunday.
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.