问题
选择题
E-mail, as well as telephones, _____ an important part in daily communication. [ ]
A. is being played
B. are playing
C. have played
D. is playing
答案
答案：D
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E-mail, as well as telephones, _____ an important part in daily communication. [ ]
A. is being played
B. are playing
C. have played
D. is playing
答案：D