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科目： 來源：不詳 題型：單選題

He is only too ready to help others, seldom, ____, refusing them when they turn to him.
A．if neverB．if everC．if notD．if any

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科目： 來源：不詳 題型：單選題

If _____ carefully, the experiment will be successful.?
A．doB．doesC．doneD．doing??

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科目： 來源：不詳 題型：單選題

The research is so designed that once _____ nothing can be done to change it.
A．beginsB．having begunC．beginningD．begun

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科目： 來源：不詳 題型：單選題

In Switzerland, six miles west of Geneva,___________ a collection of laboratory buildings.
A．lieB．a(chǎn)re lyingC．liesD．lays

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科目： 來源：不詳 題型：單選題

He is a man of few words, and seldom speaks until _____ to.
A．spokenB．speaking ?C．speakD．be spoken

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科目： 來源：不詳 題型：單選題

In that month, he earned as much as, if ____ than, $40 000.?
A．no moreB．not more?C．no muchD．not much??

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科目： 來源：不詳 題型：單選題

—Will you go fishing with me?
—___________.
A．No, I'll be very busyB．Yes, I'll be glad
C．Certainly, I'll be sorryD．Certainly, I'll be glad to

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科目： 來源：不詳 題型：單選題

—Why do you want the book so much?
　　—_______, sir.
A．StudyingB．StudiesC．StudiedD．To study

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科目： 來源：不詳 題型：單選題

I wonder why you won’t do it as_______. Its the third time you have done so.
A．told toB．be toldC．told youD．you told

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科目： 來源：不詳 題型：單選題

The dying old man opened his mouth as if_______something.
A．to sayB．sayingC．to have saidD．was saying

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