问题
选择题
The knee is the joint ______ the thigh bone meets the large bone of the lower leg.[ ]
A. when
B. where
C. which
D. that
答案
答案：B
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The knee is the joint ______ the thigh bone meets the large bone of the lower leg.[ ]
A. when
B. where
C. which
D. that
答案：B