Beijing(Xinhua)------More than seven hundred students will serve for the 2008 Beijing Olympic Games not as volunteers but as interns(实习生), working for months before the event and during the Game
------- Do you do any repair work on your car when it is out of orders? -------No. I often have it ______in the garage nearby. A. to be repaired B. repair C. repairing
,b=
,c=
,那么a+b+c=0,
=c
a,
=a+
b,
=b+
c.
=a
(a+b+c)=0.