作业帮选择正确答案Hao old____the twin brother?A.are B.is C.am
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选择正确答案Hao old____the twin brother?A.are B.is C.am
选择正确答案Hao old____the twin brother?A.are B.is C.am
选择正确答案Hao old____the twin brother?A.are B.is C.am
B 是单数twin