. Yesterday I missed my feet on the stairs and had a bad fall. Luckily it was nothing serious ___.

. Playing the violin well is not ____ so easy as you imagined. So you must get fully prepared against any difficulties.  

. When we think of communication, we ____ think of using words, talking face to face, writing messages, and so on.

. We called the First-Aid Center ____ the traffic accident happened.

Nuclear science should be developed to benefit the people ______ harm them.

—What do you think of the concert?
—I really enjoy it. I didn’t expect it was ____________ wonderful.

In many countries in the world, breakfast is a snack ______ a meal, but the traditional English breakfast is a full meal.    

On snowy days, you have to drive very_________to avoid traffic accidents.

Please go _________the ship quickly. There is only fifteen minutes left.

The fridge I bought at the second-hand shop is almost new ________, it works quite well