We hope that we can _________ the world ________ wars, killers and everything else that is bad.

Shortly after the accident, two___________ police were sent to the spot to keep order.

— Tom, are you going swimming with us?— I’d love to, but something important has ______.

The speech from the new government is a __________ that major changes are on the way．

—What was the trouble with you yesterday?— When I practised running on the playground, my strength _____ and I fell onto the ground.