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>      yousmileatothers,theywillsmileback.      A.Before ...

     yousmileatothers,theywillsmileback.      A.Before ...

問題詳情:

     yousmileatothers,theywillsmileback.      A.Before ...

      you smile at others,they will smile back.

       A. Before     B. When      C. Until      D. Though

【回答】

B

知識點:連詞

題型:選擇題

標籤: ABefore
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