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When my sister phoned me, I could not hear clearly what she was _____.

   A. speaking             B. talking                     C. saying                      D. telling

When my sister phoned me, I could not hear clearly what she was _____.

   A. speaking             B. talking                     C. saying                      D. telling

When my sister phoned me, I could not hear clearly what she was ________.

[　　]

When my sister phoned me, I could not hear clearly what she was ________.

[　　]