Something must be done to prevent factories sending out poisonous gases so as to keep the city _________.A polluting B. from polluting C. pollute D. from being polluted
He is a strict but kind teacher,is always trying to make his classes and interesting.
we first heard of the man referred to as a computer specialist in software.
--I’d like a cup of coffee, please. --How do you like it? --.
It’s really unbelievable! Can you ________ her swimming across the English Channel?
I had not listened to my mother’s advice on taking an umbrella. Later that afternoon, I was nearly ________ the rain.