Why do you choose "ぃきたぃとってぉります" in the fifth Japanese space?

You can understand the meaning like this:

1, I want to keep working hard.

2 and 4, I think I will try.

3. I want to work hard.

Judging from the meaning of the article, what I want to express here is my determination to work hard. 1 means the most fluent in the article.

Grammatically, 1 たぃとぅ means that you want to do something. Both 2 and 4 are verbs prototypes+とぅ, and とぅ is preceded by an independent and complete sentence (either a thing or a phenomenon). とぅ means that I think so, just to express my opinion on something, not to say what I want to do. Such as life, influence, thinking, etc. よぅぅとぅぅぅとぅぅぅぅぅぅぅぅぅぅぅ This is not what the article wants to express.