19.______dog was the first animal to be domesticated is generally agreed upon byauthorities in the field.A)until theB)it was theC)theD)that the请问答案为什么选择D,请帮我详细的解答,谢谢~

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19.______dogwasthefirstanimaltobedomesticatedisgenerallyagreeduponbyauthoritiesinthefield.A)untilthe

19.______dog was the first animal to be domesticated is generally agreed upon byauthorities in the field.A)until theB)it was theC)theD)that the请问答案为什么选择D,请帮我详细的解答,谢谢~
19.______dog was the first animal to be domesticated is generally agreed upon byauthorities in the field.
A)until the
B)it was the
C)the
D)that the
请问答案为什么选择D,请帮我详细的解答,谢谢~

19.______dog was the first animal to be domesticated is generally agreed upon byauthorities in the field.A)until theB)it was theC)theD)that the请问答案为什么选择D,请帮我详细的解答,谢谢~
这个表示：狗狗是第一种被驯养的动物
a until 表示直到……这里不符合句意
b it was the 这个句子已经倒装,后面有谓语动词was所以前面不需要了
c the 单用the缺少成分
所以选择D That在这里指代这个事情

主语从句引导词that放在句首时不可以省略

19.______dog was the first animal to be domesticated is generally agreed upon byauthorities in the field.A)until theB)it was theC)theD)that the请问答案为什么选择D,请帮我详细的解答,谢谢~ When the police arrived at the scene,the victim was already____(die)There is a ______dog lying in the doorway.(die) 选用正确的冠词填空.1,look!______little dog is under my desk .______dog is my uncle is.2.can you give me _____apple?3.there is _____i and ______t in the word it.4._____ girl in red is my sister.5.______ moom turns around the earth. 选择适当的词填在很横线内（只填序号）1.brightest 2.hungry 3.peach 4.socks 5.supper 6.clean 7.photos(1)a ______dog ______ （2）three_________trees______(3)take off your _____ ______(4)the _______ light______(5)have _____ _______ (6) “that was the year what was the present? the house was cleaned how was the fridge? which was against the The test was finished. she was in the where was the thing? was the plane The little girl was The day was the dragon was made the focus.was when the boy was