Thousands of athletes _______ in many countries will compete ________ medals in the 2008 Olympic Games in Beijing.  

A. involved; in    B. involving; by    C. to involve; against    D. involved; for

 Thousands of athletes______ in many countries will compete _______ medals in the 2008 Olympic Games in Beijing.

Thousands of athletes______ in many countries will compete _______ medals in the 2008 Olympic Games in Beijing.
 A. involved; in     B. involving; by 
C. to involve; against    D. involved; for

Thousands of athletes _______ in many countries will compete ________ medals in the 2008 Olympic Games in Beijing.

1. A.
   involved; in
2. B.
   involving; by
3. C.
   to involve; against
4. D.
   involved; for

.

 Thousands of athletes______ in many countries will compete _______ medals in the 2008 Olympic Games in Beijing.

A. involved; in                             B. involving; by     

C. to involve; against                      D. involved; for