Mary ________ as a secretary in this company for twenty years and now she stays at home taking care of her own garden.
| A．has served | B．had served |
| C．is serving | D．served |
After a heated discussion, the employees presented many ______ suggestions which might help improve the quality of the company’s product.
| A．accurate | B．optimistic | C．positive | D．temporary |
The more one is ______ the English-speaking environment, the better he or she will learn the language.
| A．kept up | B．filled in | C．caught in | D．exposed to |
It is requested that the reporter _______ to blame for the wrong report.
| A．referring to | B．referring to be |
| C．referred to be | D．referred to being |
It’s such a good place ______ everyone wants to go and visit _______ it is well-known all over the world.
| A．that; that | B．as; as | C．as; that | D．that; as |
A direct air route _______ Chongqing and San Francisco is expected to open next month．
| A．linking | B．being linked | C．link | D．linked |