Asia has achieved more in controlling the bird flu than Europe in the past few years, _______ the number of people infected with the virus is going up sharply.

       A. when                       B. that                          C. so that               D. where

France has reported a second case of a new type of virus infection. The virus is similar to ______ that caused SARS, a breathing disease that killed 775 people in 2003.

Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _______the number people infected with the virus is going up sharply.

A.when          B.that             C.which         D.where

Asia has achieved more in controlling the bird flu than Europe in the past few years, _______

       the number of people infected with the virus is going up sharply.

       A．when B．that   C．so that      D．where