題目列表(包括答案和解析)
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
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?
The flu is believed ______ by viruses that like to reproduce in the cells inside the human nose and throat.
A. to be caused B. to have caused C. being caused D. causing
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