问题
选择题
Peter and John are Mr Brown's sons. They are the same age (一样大) and look the same.
I think they are _____. [ ]
A. a twin
B. twin sisters
C. cousins
D. twin brothers
答案
答案：D
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Peter and John are Mr Brown's sons. They are the same age (一样大) and look the same.
I think they are _____. [ ]
A. a twin
B. twin sisters
C. cousins
D. twin brothers
答案：D