问题
选择题
________ Lucy and this is Lily .
They are my good ________.[ ]
A. This is; friend
B. This is; friends
C. It is; sisters
答案
答案：B
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________ Lucy and this is Lily .
They are my good ________.[ ]
A. This is; friend
B. This is; friends
C. It is; sisters
答案：B