A.that B.what C.it was D./

A.that B.what C.it was D./
_A.__ the dog was the first animal to be domesticated is generally agreed upon by authorities in the field.
英语人气:913 ℃时间:2020-03-22 21:41:47
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答案是a.1.因为所填的介词因在这引导一个主语从句the dog was the first animal to be domesticated.在英语关系从句中,只有that可以引导主语从句,放在句首.2.因为主语从句是一个完整的句子,而what在定语从句中是充当...
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