（ ） looked up in alarm.

Proper_____can ease people’s relationship and make their conversation more pleasant.

We consider_____the instrument be adjusted each time it is use

The chemical factory was pulled down _____protecting the environment.

It is （ ） impossible to work with this noise around.

It’s too late to go out. _____， it’s going to rain.

The young man had decided to give up the chance of studying abroad, ______ surprised his parents a lot.

Ten minutes _____ an hour when one is expecting a phone call.

You _____ all those calculations! We have a computer to do this sort of things.

English （ ） in a new way at my college in the past few years.

（ ） born in Chicago, the author is most famous for his stories about New York City.

Without his wartime experience, Hemingway _____ his famous novel A Farewell to Arms.