Accordingtothecompanies'websites,thenumberofactiveQQus...
問題詳情: Accordingtothecompanies'websites,thenumberofactiveQQusersinChinahasreached1billion,whileQihoo360alsoclaims_______atleast300millionusersbeforeJune2010.A.tohave B.tohavehad C.havi...