Is Sharpened Transitive or Intransitive?

1[transitive, intransitive] sharpen (something) to make something sharper; to become sharper She sharpened her pencils and started drawing. This knife needs sharpening.

Is Do intransitive or transitive?

as an ordinary transitive verb: He always did his duty. as an ordinary intransitive verb: I need something sharp. That screwdriver will do. When do is an ordinary transitive or intransitive verb, questions and negatives are formed by using the auxiliary verb do with it: What do you do in your spare time?

Is it sharpen or sharpened?

If your senses, understanding, or skills sharpen or are sharpened, you become better at noticing things, thinking, or doing something. Her gaze sharpened, as if she had seen something unusual. He will need to sharpen his diplomatic skills in order to work with Congress.