You have a good suggestion, but it's not as practical as _______

You have a good suggestion, but it's not as practical as _______.
A、he
B、him
C、his
D、her
【正确答案】：C
【题目解析】：he是主格的”他“，一般作主语；him是宾格的”他’，在句中作宾语；his意为“他的”，可做形容词词性的物主代词和名词性物主代词；her意为“她的”或宾格的‘"她“，只能作形容词性的物主代词，其后要接名词。句意：你的建议是不错，但不如他的可行。