Traduction de concentration concentration [ˌkɒnsənˈtreɪʃn]noun [generally, chemistry] concentration f to lose (one's) concentration perdre sa concentration
Traduction de concentration concentration [ˌkɒnsənˈtreɪʃn]noun [generally, chemistry] concentration f to lose (one's) concentration perdre sa concentration
Complétez la séquence avec la proposition qui convient. Pupils … run in the corridors, it's forbidden. must mustn't can