some cities in west china are less developed and they __of __of talents

题目

some cities in west china are less developed and they __of __of talents
a in need,a number
b are in need,a number
c are in need,the number
d be in need,a number

答案

some cities in west china are less developed and they __of __of talentsa in need,a numberb are in need,a numberc are in need,the numberd be in need,a number选项是b.