问题
选择题
E-mail , as well as cellphones, _____an important part in daily communication.
A．have played
B．play
C．are playing
D．is playing
答案
答案：C
考查主谓一致。as well as连接两个主语，谓语动词根据前一个主语决定，根据语境用进行时，故选C。
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