a total of 39 human bird flu cases,including 28deaths,_____reported in asian countries ,such as Viet NamA.has B.have C.has been D.have been

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a total of 39 human bird flu cases,including 28deaths,_____reported in asian countries ,such as Viet NamA.has B.have C.has been D.have been

a total of 39 human bird flu cases,including 28deaths,_____reported in asian countries ,such as Viet NamA.has B.have C.has been D.have been
a total of 39 human bird flu cases,including 28deaths,_____reported in asian countries ,such as Viet Nam
A.has B.have C.has been D.have been

a total of 39 human bird flu cases,including 28deaths,_____reported in asian countries ,such as Viet NamA.has B.have C.has been D.have been
C

have been
cases 复数主语的现在完成时的被动语态