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科目: 来源:不详 题型:单选题

I will not go to her birthday party ___________ I am invited.
A.as ifB.only ifC.even ifD.if only

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科目: 来源:不详 题型:单选题

______ he has made up his mind, no one can make him change it.
A.Once B.UnlessC.Until D.As

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科目: 来源:不详 题型:单选题

We were ______ surprised at the news that we couldn’t say anything.
A.soB.muchC.veryD.quite

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科目: 来源:不详 题型:单选题

I arrived half an hour earlier ______ I had time to talk with him before the meeting.
A.as soon asB.as a resultC.in order toD.so that

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科目: 来源:不详 题型:单选题

His friends ignored his advice, ______ they knew it to be helpful.
A.as ifB.sinceC.even ifD.so that

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科目: 来源:不详 题型:单选题

You can go out,   you promise to be back before 10 o’clock.
A.unlessB.as long asC.becauseD.since

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科目: 来源:不详 题型:单选题

You can borrow my car ________ you promise not to drive too fast.
A.unlessB.even if
C.in case D.as long as

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科目: 来源:不详 题型:单选题

—Hello, can I speak to Mr. Smith?
—I’m sorry, but it is 3 weeks _____ he worked here.
A.beforeB.sinceC.afterD.while

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科目: 来源:不详 题型:单选题

._______________ you have finished your work,you might as well relax yourself now.
A.Now thatB.AfterC.AlthoughD.As soon as

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科目: 来源:不详 题型:单选题

Is it a wonder that ____little cells can store    much energy?
A.so; soB.so; suchC.such; suchD.such; so

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