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–WhatshouldIdo,doctor?  --

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問題詳情:

–WhatshouldIdo,doctor?  --

–What should I do, doctor?

   --________ healthy, you should take more exercise.

   A. Keep         B. Keeping       C. To keep                  D.  Kept

【回答】

C

知識點:非謂語動詞

題型:選擇題