问题
选择题
Your friend and adviser ____ agreed to lend me some money. [ ]
A. is
B. has
C. have
D. are
答案
答案：B
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Your friend and adviser ____ agreed to lend me some money. [ ]
A. is
B. has
C. have
D. are
答案：B
，后牙呈尖对尖关系，垂直距离过高。造成这种临床表现的原因是（）