Mike didn’t notice Alice entering his room. He ____ a phone call.

A.answered         B.has answered        C.was answering      D.is answering

Mike didn’t notice Alice entering his room. He ____ a phone call.

   A. answered                              B. has answered     

   C. was answering                      D. is answering

Mike didn’t notice Alice entering his room. He ____ a phone call.

   A．answered     B. has answered     C. was answering      D. is answering

Mike didn’t notice Alice entering his room. He ____ a phone call.

   A．answered     B. has answered     C. was answering      D. is answering

Mike didn’t notice Alice entering his room. He ____ a phone call.

A．answered     B. has answered     C. was answering      D. is answering