5. On Fridays I to the cinema go.

Mistake Correction:

The original sentence is 'On Fridays I to the cinema go.'

1. Mistake: The word order is incorrect for a standard English sentence.
2. Correction: The typical word order is Subject-Verb-Object/Complement. The verb 'go' should follow the subject 'I'.

Corrected sentence: On Fridays I go to the cinema.