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科目： 來源：不詳 題型：單選題

   a bad habit is formed, it will take a long time to get rid of it．
A．Ever sinceB．WhileC．OnceD．Even if

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科目： 來源：不詳 題型：單選題

        red is a symbol of warmth, it can sometimes make people feel uneasy or even frightened.
A．AsB．WhileC．IfD．Since

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科目： 來源：不詳 題型：單選題

________scores of times, but Derek still couldn’t understand how to use past participle in a concrete situation.
A．Having explainedB．Having been explained
C．Though it was explainedD．It was explained

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科目： 來源：不詳 題型：單選題

—Did you get home a little earlier yesterday?
—No. It was six o’clock________ we got home.
A．thatB．whenC．sinceD．a(chǎn)fter

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科目： 來源：不詳 題型：單選題

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

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科目： 來源：不詳 題型：單選題

I had hardly opened the door      he hit me.
A．thanB．whenC．whileD．until

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科目： 來源：不詳 題型：單選題

You will succeed in the end ________ you give up halfway.
A．even ifB．a(chǎn)s thoughC．a(chǎn)s long asD．unless

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科目： 來源：不詳 題型：單選題

We don’t doubt _______ we will complete all the projects before the year 2010.
A．whenB．ifC．thatD．whether

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科目： 來源：不詳 題型：單選題

It wasn’t a few years _________we met each other.
A．sinceB．beforeC．untilD．a(chǎn)fter

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科目： 來源：不詳 題型：單選題

New trucks are widely used in the countryside ______ in the city.
A．a(chǎn)s wellB．both andC．a(chǎn)lsoD．a(chǎn)s well as

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