29. Dancing is a popular activity ______ people dance to shape their bodies and make friends freely.
A. where B. which C. when D. that
28. Since the new director took office, we have worked ______ hours, - that is to say, we work more freely.
A. flexible B. compulsory C. strict D. endless
27. ______ is well-known to all is that the 2010 World Expo will be held in Shanghai.
A. As B. That C. What D. It
26. Could I speak to ______ is in charge of this task, please?
A. who B. whomever C. anyone D. whoever
25. America values its economic leadership, and the political and military strength that ______ it.
A. meets with B. goes with C. deals with D. fights with
24. At the Copenhagen conference, all the countries were called on to do all they could to control green-house gas emission ______ it was too late.
A. when B. after C. until D. before
23. Education is to a human soul _______ sculpture is to a block of marble.
A. that B. which C. what D. where
22. Tuvalu, an island country in the West Atlantic Ocean, may be ______ the sea due to climate change in the near future.
A. admitted to B. lost to C. addicted to D. equal to