He had his camera ready ________ he saw something that would make a good picture.

My English teacher’s humor was ________ make every student burst into laughter.

New trucks are widely used in the countryside ______ in the city.

It wasn’t a few years _________we met each other.

We don’t doubt _______ we will complete all the projects before the year 2010.

You will succeed in the end ________ you give up halfway.

I had hardly opened the door      he hit me.

-- What’s your plan for this winter vacation?
-- I’ll take an express train to Dalian for my holiday ______ school ends．

—Did you get home a little earlier yesterday?
—No. It was six o’clock________ we got home.

        red is a symbol of warmth, it can sometimes make people feel uneasy or even frightened.