40.( )Cellphones _____ now, but 30 years ago most peopledidn’t think they could call others at any m
問題詳情
40.( )Cellphones _____ now, but 30 years ago most peopledidn’t think they could call others at any moment inalmost any place. (A) use widely (B) are widely using (C) are widely used (D) have widely used