刚好来得及 just in time

正好来得及 Just in time

相处得好/合得来 hit it off

来得好 Welcome to the party

你来得正好 Your timing is just right ; you've come just at the right mome ; you are just in time here's a gift for you

来得正好 More precisely ; Arrive at an opportune moment ; Perfect timing

变得好起来 get better

过得好起来 be better off