肩胛下角平对（）
A．第5肋
B．第6肋
C．第7肋
D．第8肋
E．第9肋
参考答案：C
— Jim, Tom is looking for his English book. Is this _____?
— No, that is _____. I don't know where his is. [ ]
A. his, mine
B. he, mine
C. him, mine
D. his, my
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