Betty shows great interest in this poet now, but she thought it boring ________ she read it．

1. A.
   at the first time
2. B.
   the first time
3. C.
   for the first time
4. D.
   at first

Betty shows great interest in this poet now, but she thought it boring ________ she read it.

A．at the first time                                           B．the first time       

C．for the first time                             D．at first