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          【題目】There is no difference between the two words. I really don't know________.

          A. what to choose B. which to choose C. to choose which D. to choose what

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          【題目】We need to take morning exercise every day________keep healthy.

          A.so thatB.in order to

          C.such thatD.in order that

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          【題目】The boy read the book________and found something important in it.

          A.carefully enoughB.enough careful

          C.careful enoughD.enough carefully

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          【題目】—I didn't hear you come in just now.

          —That's good. We tried________any noise, for you were sleeping.

          A.not makeB.not to makeC.to makeD.making

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          【題目】What ________excellent boy! And he is________best student of all.

          A.a; aB.an; /C.a; theD.an; the

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          【題目】I found the door _____ when I got home.

          A. opened B. close C. unlocking D. open

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          【題目】Tell him _____ the window.

          A. to shut not B. not to shut C. to not shut D. not shut

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          【題目】When I came back, I found nobody ___. It was empty.

          A. on B. out C. in D. away

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          【題目】I think ___ necessary to learn English well.

          A. its B. it C. that D. that is

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          【題目】The room _____ every day.

          A. must clean B. must be cleaning C. must be cleaned D. is cleaning

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