Question

No creo que yo... ir a la fiesta esta noche

Answer 1

No creo que yo... ir a la fiesta esta noche

Answer:  pueda

No creo que yo pueda ir a la fiesta esta noche.

Translation: I do not think I can go to the party tonight.

Explanation: The subjunctive mood is used in expressions of will, doubt or suggestion. A noun clause works as the direct object of the main verb.

Yo pueda: subjunctive present, first person singular.

$\textit{\textbf{Spymore}}$​​​​​​

Answer 2

Translated: I don’t think that I... go to the party tonight

If the ... was supposed to be a fill in the blank, then the sentence would be: No creo que yo puedo ir a la fiesta esta noche.