| The World Health Organization gave a warning to the public without any _____, when the virus of H1N1 hit Mexico in April, 2009. |
A. delay B. effort C. schedule D. consideration |
| China has got a good _____ for fighting against the flu with its careful and smooth organization. |
A. reputation B. influence C. impression D. knowledge |
| A good friend of mine from _____ I was born showed up at my home right before I left for Beijing. |
A. how B. whom C. when D. which |
| — I wonder how much you charge for your services. — The first two are free _____ the third costs $30. |
A. while B. until C. when D. before |
| We can never expect _____ blue sky unless we create _____ less polluted world. |
A. a; a B. a; the C. the; a D. the; the |
| After studying in a medical college for five years, Jane _____ her job as a doctor in the countryside. |
A. set out B. took over C. took up D. set up |
| The English spoken in the United States is only slightly different from _____ spoken in England. |
A. which B. what C. that D. the one |
| A cough is usually nothing to worry about unless it lasts for ten days ____. |
A. or more B. instead C. at most D. only |
| In some places women are expected to earn money ____ men work at home and raise their children. |
A. but B. while C. because D. though |