.
In those days, the old woman __________ sit at the door for hours, waiting for her son to return from abroad.
| A．should | B．used to | C．might | D．would |
34. ---- I don’t want to move to that city. It is heavily polluted.
---- Pollution is common. The city here is ______.
| A．no less clean | B．no clean | C．no cleaner | D．not less clean |
33. Although I’ve never worked for a bank before, I feel quite ______ there because I’m used to dealing with figures.
| A．at peace | B．at home | C．at sea | D．at will |
32. Despite what I’d been told about the native people’s attitude towards strangers, ___
___ did I come across any rudeness.
| A．in no time | B．at no time | C．in any time | D．at any time |
31. Hillary Clinton arrived in Beijing yesterday, ______ the start of her short visit to China.
| A．marked | B．having marked | C．marking | D．to mark |
30·You can make a complaint to the local government____ you are happy with the way things are.
| A．unless | B．if | C．once | D．As |