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I recognized him_________ I saw him in the crowd.

—What do you think of the music teacher ?
—______ she is an attractive lady, she can be extremely difficult to work with．

Experts are trying to work out a plan to deal with the problems caused by global warming _________ it is too late.

—Some Chinese students find it hard to get used to the life in London.
—Exactly, ______ they’ve learnt a lot about the city before.

It’s his fault, not mine. I’d shoot myself _____ I apologized to him.

Even though it is at least 20 years _____ we got to know, I can’t forget the scene_____ we were introduced to each other.

Be ready for the job interview, _____ you may miss the good opportunity.

Make decisions right away, ______ you’ll miss a golden chance.

In America．a(chǎn) friend's inviting you to a restaurant doesn't mean that he or she will pay for the meal     you are told in advance．

Schools in the east tend to be better equipped, ____ those in the west are relatively poor.