问题
选择题
What worried the child most was _________ to visit his mother in the
hospital.
A．his not allowing
B．his not being allowed
C．his being not allowed
D．having not been allowed
答案
答案：B
本题考查动名词的用法。由于allow与逻辑主语child形成被动关系，再者，动名词的否定形式是not+动名词构成。