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    【題目】__________ you may go or stay, at least wait until you get the letter.

    A.IfB.UnlessC.WhetherD.Although

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    【題目】Of all subjects, chemistry seems to be __________ for me to master.

    A.so difficultB.too difficultC.more difficultD.the most difficult

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    【題目】I can hardly make a __________ on how to deal with this problem.

    A.suggestionB.conditionC.decisionD.attention

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    【題目】Don't make____________same mistake for the second time in____________day.

    A.the; aB.a; aC.the; theD.a; the

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    【題目】He explained again and again in order to make what he did ________.

    A.understandB.understoodC.to understandD.understanding

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    【題目】As far as we know, safety comes first     you do.

    A.wheneverB.whoeverC.whereverD.whatever

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    【題目】Both Lily and Lucy ______________to the party yesterday, but they didn't come at all.

    A.agreedB.sentC.were calledD.were invented

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    【題目】—Have you finished the book ______________you borrowed from the library?

    A.whichB.whereC.whatD.whose

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    【題目】Many volunteers ______________food and water to the local people.

    A.gave outB.cut outC.put outD.found out

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    【題目】________the things like knives and medicine away in our house so that we can keep childr safe.

    A.PutB.Puts

    C.To putD.Putting

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