After months of voyage, Columbus arrived in _____ later proved a new continent.
| A．where | B．which | C．what | D．that |
32. It is reported that the scientists in our country are ______ all possible ways to control H1N1 flu.
| A．operating | B．designing | C．replacing | D．Exploring |
31. Look at the notice. You are not allowed _______ the gymnasium without permission.
| A．to enter | B．enter | C．for entering | D．Entering |
30. It is said that Columbus Day is ______ the arrival of Christopher Columbus in the New World in the USA.
A. in honor of B. for the honor of C. in favor of D. in place of
29. As we all know, the 2012 Olympic Games ______ in London, which is an ancient city.
| A．are to hold | B．will hold | C．are to be held | D．are held |
28. My English teacher has given me so much help that I really want to do something for him ______.
| A．in return | B．in fact | C．in surprise | D．in turn |