[-B32] It was not until the early years of the 19th century

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[-B32] It was not until the early years of the 19th century that _______ what heat was.
A.man knew
B.did man knew
C.didn't man know
D.did man know
翻译并分析

人们直到十九世纪初期才知道暖气是什么.
因为前面有了一个that,后面要加完整句子,后面的选项只适用于没有that的情况下.
如果没有that,那么not until 后面要谓语前置,而直到才,not until .did .do 则应该选D

[-B32] It was not until the early years of the 19th century 第28题 (2.0) 分 Not until the early years of the 19th century（） :it was not until the middle of the 19th century that the fi It was not until at the end of 19th century that shooting ea not until the early years of the 19 century ___ what heat is untill the early years of the 19th century did man know what Not until the 19th century was the written examination proba 英语翻译Not until the beginning of the twentieth century was it 英语翻译not until beginning of the twentieth century was it reco it was argue at the end of th 19th century that humans do no 英语翻译it was argued at the end of the 19th century that humans 英语翻译：It was built in the early 12th century by King Suryavar