问题描述:
There are some ( ) in these ( )
选项:A.knifes.pencil-boxes
B.knives.pencils-box
C.knives.pencil-box
D.knives.pencils-boxes
选项:A.knifes.pencil-boxes
B.knives.pencils-box
C.knives.pencil-box
D.knives.pencils-boxes
问题解答:
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