The key to exercise solutions in chapter Unit 122 - On time and in time / At the end and in the end for the textbook English Grammar in Use with authors Raymond Murphy from Cambridge University Press
Question
Read the situations and make sentences using just in time.
Answer
I managed to stop just in time.
I got home just in time.
I stopped him just in time.
We got to the cinema just in time for the beginning of the film. /... just in time to see the beginning of the film.