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

发布时间：2020-08-15 01:46:35

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
解析：as well as连接主语时，谓语动词与其前面的名词在人称和数上保持一致，因Email是单数，故应排除B、C、D三项。
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