At present teenagers prefer going to the net bar, ________ as is known to some of them, they can chat with their friends or play games, ________ some more reading．

1. A.
   which; rather than do
2. B.
   which; doing
3. C.
   where; to doing
4. D.
   where; to do

At present teenagers prefer going to the net bar, _______as is known to some of them, they can chat with their friends or play games, _______ some more reading.

A．which; rather than do                                B．which; doing

C．where; to doing                                          D．where; to do