问题描述：
【Cats and dogs are the most popular pets and thought_____members of the family.】
Cats and dogs are the most popular pets and thought_____members of the family.
A[for] B[of] C[as] D[from]
选什么,为什么?
Cats and dogs are the most popular pets and thought_____members of the family.
A[for] B[of] C[as] D[from]
选什么,为什么?
问题解答：
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