Many people have been ill from a strange disease these days, we’ve never heard of before.

发布时间：2020-08-17 12:52:05

Many people have been ill from a strange disease these days,      we’ve never heard of before.
A. one
B. that
C. it
D. this

网友回答

(答案→)A. one
B. that
C. it
D. this
解析：one作同位语，指代前面的disease。
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