she is ____serious student now than she used to be.A a far more B the far moreC much more D far more为什么?

she is ____serious student now than she used to be.A a far more B the far moreC much more D far more为什么?
she is ____serious student now than she used to be.
A a far more
B the far more
C much more
D far more
为什么?

she is ____serious student now than she used to be.A a far more B the far moreC much more D far more为什么?
a
他是一个比过去更认真的学生
有student 前面必须有冠词修饰 排除 cd 根据句意选a