See, the trouble is no one was taught grammar in this country for like 20 years. Hence I can write excellent English, mainly on account of reading a lot, and I could easily make those sentences work, but I haven’t the slightest clue what a zero or first conditional is. I doubt your prospective boss knows either.
You need to change the verbs so the sentences make sense, is literally all I can say. So the first one is “Unless Jack leaves home before 7am, he will not have time to cycle to work,” and the second is “If it is sunny, Ollie always goes to the beach.”
I know how to do it, I just don’t have the slightest idea what I’m doing or how to explain it.