—Who

來源:國語幫 2.2W

問題詳情:

 —Who

 —Who______ it be that is knocking at the door?  

   —It ______ be Father, but I’m not sure.

     A. can; must          B. can; may     C. must; can     D. may; must

【回答】

B

知識點:情態動詞

題型:選擇題

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