With a lot of modern office equipment, today’s schools are quite different from ____ of the past.

much advice I gave her, she did what she wanted to do.

Eighty-five percent of that country’s population_____ in six great cities_____ on the coast.[ ]

It is bad ________ for a man to smoke in public places where smoking is not allowed.

When you are swimming, your ears. You can use earplugs(耳塞)to stop water from getting into your ears.