Q

Both 1 and 3 are fine.

(Off topic: My personal preference is for "toward" instead of "towards", but both are possible.)

Hello Maverick

Each of the versions could be correct, in context:

1) It was a great book. I was most excited towards the end of the story.

2) Of all the people watching the film, I was the most excited towards the end of the story; whereas others were more excited than me at the beginning.

3) I was excited the most towards the end of the story, and the leas

Thanks you very much (MrP and CJ).It seems that 1 and 3 (may) have the same context. But 3 seems to be more specific and emphasizes the end of the story, isn't he?

Hello M88

I've modified my answer to 3, to give a more likely context.

'I was excited the most' seems to me to put more stress on the excitement itself. It seems to cry out for an agent, e.g.

'I was excited the most by the end of the story.'

MrP

Is "mostly" possible here too? (maybe "I was mostly excited") the context seems to be clear