Common sense requires us to get away from the concept that national boundaries are frontiers _________ knowledge may not spread.
| A．with which | B．across with |
| C．through which | D．from which |
34. She did not take the advice that she ___ at rush hour, so she got lost.
| A．not travel | B．did not travel | C．should travel | D．goes traveling |
33. There _____ be any difficulty in passing the oral test since you have practiced a lot in the school.
| A．mustn’t | B．shan’t | C．shouldn’t | D．needn’t |
32. The man had expected to see all his relatives when in hospital, but _______ came to see him while many of his friends offered him their help.
| A．none | B．no one | C．someone | D．Anyone |
31. Due to circumstances ____ our control the performance has had to be cancelled.
| A．above | B．within | C．beyond | D．over |
30. Only those who have experienced hardship ____ well aware of what happiness means.
| A．can they be | B．they can be | C．can be | D．they can |