Getting your students ________ in classroom activities is vitally important.

Bending down，he        the footprints   that hadn’t been blow away in the wind, concluding that they belonged to a wolf.

He is _________ to have gone abroad,for I haven’t seen him for weeks.

— Could you give _______ an introduction to the new machine?
— Of course. I will tell you how to use it.

These days, it seems that we rely on the Internet often, and we couldn’t possibly live _____it.

George could not speak Italian so he       an Italian girl to work as an interpreter.

My first _______ of him was that he was a kind and thoughtful young man.

John was so sleepy that he could hardly keep his eyes ______.

She was depressed and felt totally __________ about the future.

Some passengers were ______ in the traffic accident and taken to the nearest hospital.