Thefluisbelievedbysomescientists
- 习题库
- 关注:3W次
问题详情:
The flu is believed by some scientists ________by viruses that like to reproduce in the cells inside the human nose and throat.
A.causing B.being caused C.to have caused D.to be caused
【回答】
B
知识点:非谓语动词
题型:选择题
标签:
- 文章版权属于文章作者所有,转载请注明 https://zhongwengu.com/exercises/1608yq.html