Not until the early years of the 19th century what heat is. A. man did know B. man knew C.

发布时间：2020-08-16 07:36:22

Not until the early years of the 19th century     what heat is.
A. man did know
B. man knew
C. didn’t man know
D. did man know

网友回答

A. man did know
B. man knew
C. didn’t man know
(答案→)D. did man know
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