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 being allowed
答案
答案：B
B。否定词 not 应放在-ing 形式之前，逻辑主语 his 之后，由此可排除 C 和 D；又因为 the child 与 allow 是被动关系，故选 B。