_____ on May Day, the Shanghai Expo has attracted tens of thousands of visitors around the world every day．
| A．Having opened | B．Opened |
| C．Opening | D．To open |
He is so addicted to smoking that ______ seems to be no chance of talking him into quitting.
| A．this | B．what | C．it | D．there |
-----How do yu find your new classmates?
----- Most of them are kind, but ______ is so good to me as Bruce.
| A．none | B．no one | C．every one | D．some one |
It is widely accepted that young babies learn to do things because certain acts lead to_______.
| A．rewards | B．prizes | C．awards | D．result |
How about taking _______ short break? I want to make _____ call.
| A．the;a | B．a; the | C．the; the | D．a; a |
the programme, they have to stay there for another 2 weeks.
| A．Not completing | B．Not having completed |
| C．Not completed | D．Having not completed |