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科目： 來源：不詳 題型：單選題

_______ I take part in a group discussion or try to speak English to someone, I find it difficult to express myself.
A．If onlyB．Every timeC．Now thatD．In case

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科目： 來源：不詳 題型：單選題

— What did he think of the trip to Beijing last month？
— He had such a good time ________ he visited the Great Wall.
A．untilB．that　　　　C．whereD．when

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科目： 來源：不詳 題型：單選題

There’s no way of knowing why one man makes an important discovery         another man, also intelligent, fails.
A．sinceB．ifC．a(chǎn)sD．while

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科目： 來源：不詳 題型：單選題

It’s really unwise of some teenagers from low-income families to spend a large sum of money on Apple products ______ they could buy other cheaper brands.
A．unlessB．whenC．so thatD．in case

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科目： 來源：不詳 題型：單選題

I can’t remember how the tune goes, ______ I’ll recognize it when I hear it.
A．so B．butC．becauseD．unless

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科目： 來源：不詳 題型：單選題

_____ impressed me was the boy’s ability to deal with this kind of difficult physics problem.
A．WhichB．WhatC．ItD．That

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科目： 來源：不詳 題型：單選題

We’ve offered her the job, but I don’t know_________ she’ll accept it.
A．whereB．whatC．whetherD．which

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科目： 來源：不詳 題型：單選題

It doesnt matter ________ you pay by cash or credit card in this store.
A．howB．whetherC．whatD．why

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科目： 來源：不詳 題型：單選題

A turning point of the continuously high housing price won’t appear suddenly because there must be a certain process_______many factors lead to the change.
A．whichB．whatC．whereD．that

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科目： 來源：不詳 題型：單選題

David knocked at the door for nearly half an hour______Mary opened it, unwilling.
A．whenB．whileC．untilD．before

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