By the time Jack returned home from England, his son __________ from college.
The activities organized by our school really gave us a platform ____ we learned team spirit.
She is not going to buy the sofa because it _____ too much room in the living room.
The businessperson wanted to sell his goods fast: ______, he chose his partner with great care.
The experienced teachers try their best _____ the younger ones _____experience.
John is not a man to count on, and it is very likely that the work ____ by the time he arrives here.