After long and hard work, the police at last discovered the         of the baby found by the side of a road.

As second-hand smoking is more harmful and dangerous, people want a total _____against smoking in public．

—What’s the central idea of the passage，Bob?—Sorry，I can’t make________of it.It’s beyond my ability.

Julie’s parents had spared no _____for her going abroad.

There are many people who have a          like yours, but they don’t believe they have the power to do anything to improve our environment.