The flu is believed___by viruses that.causing being caused to have caused to be caused选哪个顺便解释下

Kate is ill and she is in bed .she is got______.A.flu B.a flu C.the flu he is got the flu这里为什么要用is 对get the flu提问()is the ()with many people? what is called flu? It is reported that the bird flu has been brought under control in this area =The bird flu is____ have flu还是have the flu? I have the flu. 英语 flu-like啥意思?The girl is said to have developed flu-like symptoms on Thursday. have the flu与get the flu是区别 请问get the flu与have the flu的区别 Does Mike have the flu? the flu is believed to be caused by viruses 什么意思 解释下 谢谢 The flu is an illness in which you get a cold or a fever. The Chinese government is taking action to stop H1N1 flu from s . The Chinese government is taking action to stop H1N1 flu form s______ The flu is terrible ,but our government_____action to prevent it already.Ahas taken Btook Cwill大 得了流感是have the flu 还是have a flu heve the flu 可以说成have a flu