Question

I worked _at the office . so I could not talk to you_(give correct form of late)​

Answer 1

late will be the correct form of the word

Answer 2

I worked late at the office so I could not talk to you.

• The correct form of late will be "late".
• The past tense of "work late" is "worked late", while the present participle form will be "work late" or "working late" and the future tense will be "will work late".
• The word "late" does not has the forms of tense in particular but the verb used with it decides the tense of the sentence.
• In the given sentence the verb "worked" is used which tells the past tense of the verb.