The World Health Organization warns that Asian countries attentive to bird flu since Asia rid of the disease completely. A. should keep; has got B. must remain; has not got C. ought to stay; got D. shall be; had not got 【查看更多】

 

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The World Health Organization warns that Asian countries _________ attentive to bird flu since Asia ________ rid of the disease completely.

A. should keep; has got　　　　　　 B. must remain; has not got

　 C. ought to stay; got　　　　　　　 D. shall be; had not got

 

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