Nowadays,            mobile phone is            means of communication.

A. the; a                B. the; the              C. a; the                       D. a; a

Nowadays, ________ mobile phone is ________ popular means of communication.

1. A.
   the; a
2. B.
   a; /
3. C.
   the; the
4. D.
   a; the

Nowadays,         mobile phone is         popular means of communication.

       A．the; a       B．a; 不填    C．the; the     D．a; the

Nowadays,　　　 mobile phone is　　　 popular means of communication.

　 A．the; a　　　 B．a; 不填　　 C．the; the　　 D．a; the