The eraser is not mineIt’s．A. else someoneB. someone else’ sC. other someoneD. someone ot

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A. else someone
(答案→)B. someone else’ s
C. other someone
D. someone other’s
解析：B 考查不定代词.else修饰不定代词需后置，表示“其他人的”，只需在最后加上’s既可，即someone else’ s。