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______ the traffic jam we should have arrived at the airport half an hour earlier.

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As reported in the essay by Prof. Brown, it is only in the most difficult circumstances ________ a man’s abilities are fully tested.

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You may fly to South Korea next Friday, ______ you don’t mind changing planes on the way.

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---Though I met with one difficulty after another, I _____ to get through with it.

--Congratulations to you!

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— Would you like to go to the exhibition with me, Dorothy?

—I have got no interest in it; ______ , I have lots of emails to send.

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________ on the radio or see on TV is only a small part of all the wonderful music that is waiting for us.

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Many wild animals in the world _____ , so we must take measures to protect them.

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They thought about it for a long time, but still couldn’t ________ a solution.

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He seldom listens to others. He ____ answer for what he has done.

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The talk between the two leaders aimed at ending the long _____of war between the two countries.