问题
选择题
Email, as well as telephones, _______ an important part in daily communication.[ ]
A. is playing
B. ha
ve played
C. are playing 
D. play
答案
答案：A
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Email, as well as telephones, _______ an important part in daily communication.[ ]
A. is playing
B. have played
C. are playing
D. play
答案：A