The health official said 12 suspected cases of influenza A (H1N1) were tested negative and , so far, this city has reported no case of the virus.
A. what; that
B. that; what
C. 不填; that
D. that; 不填
网友回答
A. what; that
B. that; what
(答案→)C. 不填; that
D. that; 不填
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