What surprised me most was to meet his girlfriend again.
A. not his allowing
B. his not being allowed
C. his being not allowed
D. his having not been allowed
网友回答
A. not his allowing
(答案→)B. his not being allowed
C. his being not allowed
D. his having not been allowed
解析：考查动名词做表语：句意：最让我惊讶的是他不被允许再见女朋友了。动名词前面可以加形容词性物主代词做逻辑主语，如果是否定的动名词，就在动名词前面加not。选B。