the harder you work,the more __ you are to succeed A.likely B.possibly C.probably答案是A为什么不能选BC?

the harder you work，the more _A_ you are to succeed
B和C都是副词
A可以是形容词
这里修饰的是be动词，you are more likely to succeed.

比较级more likely 或 likelier *most likely 或 likeliest
BC选项没有比较级，所以只能选A

换成陈述语气就好懂了
You work harder,and you are more likely to suceed.
B和C是副词,不能用在系动词后作表语.
另,多音节词的比较级和*用more,most,less,least,没有likelier,likeliest这种形式