要看句子而定 e.g. 1. The boy is more and more interested in learning English. (interested,形容词;修饰the boy) 2. The story is becoming more and more interesting.(interesting形容词;修饰the story) 3. The old man has more and more interests. (interests名词复数)追问
As days went by I could do better and better and became more and more _______ in it.