Be Late or Become Late

[Volcano1985]

Come to my office before it's late

Come to my office before it becomes late

Which is ok ?

[Offroad]

I am afraid there's no "become late", "to be" + "late" sounds better:

He's notorious for beeing late.

Come in before it's too late!

[BobK]

Or '... before it gets late'. "Get" has the advantage of conveying the idea of becoming, which - as marciobarbalho says - doesn't collocate with 'late'.

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