---- Have you informed Tom and Ann that some foreign experts will visit our company at 8:00 tomorrow morning? 

---- Yes, I have. But_____ of them asked me to tell you that they would not be able to come.


  1. A.
    any
  2. B.
    either
  3. C.
    both
  4. D.
    two
C
根據(jù)問話中Tom和Ann是兩個人，又根據(jù)But表示轉(zhuǎn)折，所以選C，both表示兩者都。
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