．So far, several cases of a disease, _____ as H1N1, are reported to have been found in the country． ...
2023-01-09 02:11:30 184次 江苏省2010届高三考前适应性考试英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
．So far, several cases
of a disease, _____ as H1N1, are reported to have been found in the country．
A．knowing
B．to be known C．having
known D．known
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