“就(jiù)” vs “才(cái)”: Sooner or Later?

Please choose the correct answer to fill in the blanks.
Lucy:   Nǐ zěnme xiànzài ___ lái?
Lucy:你   怎么   现在   ___ 来?
Lucy:  Why are you coming so late?
Lǐ Míng: Duìbuqǐ, wǒ wǔdiǎn ___ chūmén le, kěshì lùshàng dǔchē.
李  明: 对不起, 我   5点     ___ …