Why not try your luck downtown,Bob?That’s _______ the best jobs are.

Why were you late for school again this morning—I was about to go shopping _________ it began to rain.

ear, the coal workers theirlungs X-rayed to ensure their health.

Paris (巴黎) is one of ______ cities in the world.

Your future is in your hands. Your life is ________ you make of it.