问题
选择题
This is Mary and that is Kate. _____ my _____ . [ ]
A. She's ; friend
B. They're ; friends
C. They're; friend
D. She's ; friends
答案
答案：B
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This is Mary and that is Kate. _____ my _____ . [ ]
A. She's ; friend
B. They're ; friends
C. They're; friend
D. She's ; friends
答案：B