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The sign reads “In case of fire.break the glass and press red button. A.不填,a B.不

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The sign reads “In case of fire.break the glass and press red button. A.不填,a B.不

 The sign reads “In case of ______ fire,break the glass and press ___ red button.”   

   A.不填;a       B.不填;the       C. the;the          D. a;a

试题答案

B