摘要: the flu is believed by viruses that like to reproduce in the cells inside the human nose and throat. A. causing B being caused C to be caused D be have caused
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The flu is believed________ by viruses that like to reproduce in the cells inside the human nose and throat.
- A.causing
- B.being caused
- C.to be caused
- D.to have caused
The flu is believed _________ by viruses that like to reproduce in the cells inside the human nose and throat.
A. causing B. being caused C. to be caused D. be have caused
查看习题详情和答案>>The flu is believed______by viruses that like to reproduce in the cells inside the human nose and throat.
A.causing B.being caused
C.to be caused D.to have caused
查看习题详情和答案>>