你的说法是对的,本题答案应为B,而不是C.
1.这个主要讲的是否定转移.
主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.
I think she can get there on time,can't she?
She thinks she can get there on time,doesn't she?
You think she can get there on time,don't you?
2.only a little不是固定搭配.其中only用来修饰a little.