—Shall we go now?       

—Yes. There is a bus _____ at the gate.      [ ]

A. wait        

B. waiting        

C. wait  for        

D. waits

12．On Oct. 23 , 2008 there was the 6o^th sports meet, _____our students took an active part in.

A．what

B．which

C．who

D．Where