With the development of modern society, E-mail as well as telephones an important part in daily munication.
A. have played
B. is playing
C. are playing
D. played
网友回答
A. have played
(答案→)B. is playing
C. are playing
D. played
解析：考查主谓一致和时态：两个主语被as well as连接时，谓语和前面的主语一致，就是和E-mail一致，根据句意：随着现代社会的发展电子邮件和电话在日常生活中起着重要的作用。用一般过去式。选B。