—We didn't find the Blacks ________ the lecture.—No one had told him about ________ a lecture the following day.
After long and hard work, the police at last discovered the of the baby found by the side of a road.
At discussion, Jack ____ an idea that they should bring down the price of the bicycles.
With a lot of modern office equipment, today’s schools are quite different from ____ of the past.
I really don’t know _________ I had my money stolen.
You will fall in love with that city _____ you learn about it.