--- Do you think it _____ to argue with them? --- The question is not worthy _____.
Students who pass the test will be ______to the next grade, as has been announced.
Now, the world’s focus is all on Shanghai ______ the 2010 world Expo is to be held.
____you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.
---Did you listen to the lecture given by the famous herbalist doctor Zhang Wuben? --- No, we ______ it. But we had a lot of traffic on our way.
Barrack Obama’s recent visit to the Asian nations clearly sent a message to the world ______ Asia is important in America’s global partnership.