the flu is believed to be caused by viruses 什么意思 解释下 谢谢

the flu is believed to be caused by viruses 什么意思 解释下 谢谢 The flu is believed ______ by viruses that like to reproducein the cells inside the human nose and throat.后面1半 the flu is believed to be caused by viruses that like to reproduce in the cells inside the human nose and throat. The flu is believed ______byviruses that like to reproduce in the cells insA.causing B.being caused C.to be caused D.to have causedwhy? The flu is believed to be caused by virus.这句句子的主谓宾是什么?to be在这里做句子的什么成分 Kate is ill and she is in bed .she is got______.A.flu B.a flu C.the flu 分词不定式 作宾补作定语作宾语 The flu is believed ________by viruses that like to reproduce in the cells inside the human nose and throat.be caused,除了 sb/sth be believed to be done这个结构可以作为理由外请再分析一下 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. _____ that the left side of the human brain is responsible for logic.1.It generally is believed 2.It is believed generally 3.It is generally believed 4.Generally it is believed _____ that the left side of the human brain is responsible for logic.1.It generally is believed 2.It is believed generally 3.It is generally believed 4.Generally it is believed It___that there are more than seven thousand languages in the worldA believes B is believing C is believed D believed have the flu与get the flu是区别