check up on
US /tʃek ʌp ɑn/
UK /tʃek ʌp ɑn/

1.
vérifier, surveiller
to investigate or monitor someone or something to ensure they are doing what they should be doing or that everything is in order
:
•
I need to check up on the kids to make sure they're doing their homework.
Je dois vérifier les enfants pour m'assurer qu'ils font leurs devoirs.
•
The manager decided to check up on the new employee's progress.
Le manager a décidé de vérifier les progrès du nouvel employé.