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科目： 來(lái)源：不詳 題型：單選題

Don’t promise anything ______ you are one hundred percent sure.
A．whetherB．a(chǎn)fterC．howD．unless

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科目： 來(lái)源：不詳 題型：單選題

---Where’s that report?
---I brought it to you ________ you were in Mr. Black’s office yesterday.
A．if B．whenC．becauseD．before

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科目： 來(lái)源：不詳 題型：單選題

It is difficult for us to learn a lesson in life ____we’ve actually had that lesson.
A．untilB．a(chǎn)fterC．sinceD．when

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科目： 來(lái)源：不詳 題型：單選題

He was told that it would be at least three more monthshe could recover and return to work.
A．whenB．beforeC．sinceD．that

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科目： 來(lái)源：不詳 題型：單選題

he field research will take Joan and Paul about five months; it will be a long time _______ we meet them again.
A．a(chǎn)fterB．beforeC．sinceD．when

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科目： 來(lái)源：不詳 題型：單選題

Many of them turned a deaf ear to his advice, _______ they knew it to be valuable.
A．a(chǎn)s ifB．now that C．even thoughD．so that

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科目： 來(lái)源：不詳 題型：單選題

_______,his idea was accepted by all the people at the meeting.
A．Strange as might it sound
B．As it might sound strange
C．As strange it might sound
D．Strange as it might sound

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科目： 來(lái)源：不詳 題型：單選題

I won’t call you, ________ something unexpected happens.
A．becauseB．whetherC．unlessD．while

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科目： 來(lái)源：不詳 題型：單選題

You will be successful in the interviewyou have confidence.
A．beforeB．onceC．untilD．though

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科目： 來(lái)源：不詳 題型：單選題

Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest.
A．whyB．howC．unlessD．where

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