Tom must be waiting for you now, _______?
Many young people in the West are expected to leave ______ could be life's most important decision --- marriage --- almost entirely up to luck.
We missed our train, and ___ the next train was delayed, ____ we had to wait for two hours.
Not only ______ interested in football but ______ beginning to care about it.
From this story, you can have some idea ______ can be used in reality.
We believe ______ you have been devoted to ______ naturally of great necessity.