网址：http://m.1010jiajiao.com/timu_id_1679946[举报]
E－mail, as well as telephones, ________ an important part in daily communication．
A．is playing
B．have played
C．are playing
D．play
E－mail, as well as telephones, an important part in daily communication.
A．is playing B．have played C．are playing D．play