E-mail, as well as telephones, an important part in daily communication.A. is playingB. h

发布时间：2020-08-16 11:52:27


E-mail, as well as telephones,       an important part in daily munication.
A. is playing
B. have played
C. are playing
D. play

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(答案→)A. is playing
B. have played
C. are playing
D. play
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