What worried the child most was _____________ to visit his mother in the hospital. [ ]

A. to his being allowed

B. his not being allowed        

C. not his being allowed                 

D. not his allowed

房地产业结构平衡主要表现在( )

A．房地产业各类相关房地产企业比重的平衡

B．房地产业内部各类房屋供求平衡

C．房地产业发展地区平衡

D．房地产业经济发展趋势的平衡

E．房地产业发展与国民经济发展的平衡