So extraordianry __________ that it left a deep impression on visitors.
| A．was the Shanghai 2010 Expo | B．the Shanghai 2010 Expo was |
| C．did the Shanghai 2010 Expo | D．the Shanghai 2010 Expo did |
— I heard they went skating in the mountains last winter.
— It _____ true because there was little snow there.
| A．may not be | B．won’t be | C．couldn’t | D．mustn’t be |
It is hard for me to imagine what I would be doing today if I _______ in love at the age of seven, with the Melinda Cox Library in my hometown.
| A．wouldn’t have fallen | B．had not fallen | C．should fall | D．were to fall |
It has been announced that candidates ______ remain in their seats until all the papers have been collected.
| A．can | B．will | C．may | D．shall |
— Is John coming by train ?
— He should, but he ______ not. He likes driving his car.
| A．must | B．can | C．need | D．may |
— I hear you’re got a set of valuable Australian coins. ______ I have a look ?
— Yes, certainly.
| A．Do | B．May | C．Will | D．Should |