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科目： 來(lái)源：不詳 題型：單選題

Don’t be afraid of asking for help ___________ it is needed.
A．unlessB．sinceC．whenD．a(chǎn)lthough

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科目： 來(lái)源：不詳 題型：單選題

I always take something to read when I go to the doctor’s ___________ I have to wait.
A．in caseB．so thatC．in orderD．a(chǎn)s if

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科目： 來(lái)源：不詳 題型：單選題

As the interview rule goes，you can take some time to think through answers_______ you make a reply.
A．a(chǎn)fterB．whenC．beforeD．since

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科目： 來(lái)源：不詳 題型：單選題

-----How long do you think it will be _____man can finally solve the problem of cancer?
------Well．it depends．
A．whenB．untilC．a(chǎn)fter D．before

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科目： 來(lái)源：不詳 題型：單選題

He told me his story in private，__________ nobody else knew what had happened to him．
A．butB．soC．whileD．or

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科目： 來(lái)源：不詳 題型：單選題

Parents are advised to put books __________ they are easily accessible to children .
A．whichB．whereC．in whichD．who

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科目： 來(lái)源：不詳 題型：單選題

A ban is called for by the residents __________ people shouldn’t walk dogs in that square．
A．whatB．whetherC．whyD．that

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科目： 來(lái)源：不詳 題型：單選題

_______ there are many different types of food, some animals spend their lives eating only one type.
A．SinceB．UnlessC．OnceD．While

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科目： 來(lái)源：不詳 題型：單選題

___ I saw her, she was working in a shop.
A．The last timeB．For the last time.C．To the last time.D．In the last time.

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科目： 來(lái)源：不詳 題型：單選題

We had to be patient because it ______ some time ______ we got the full results.
A．was; sinceB．had been; since
C．was; beforeD．would be; before

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