In that south American country, _____bicycle is not_______ popular means of transportation．

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

In that south American country, _____bicycle is not_______ popular means of transportation．

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