toughen
[ˈtʌfn]transitive verb Conjugation
| 1. | [character] indurire |
| 2. | [material] rendere più resistente |
ENGLISH
ITALIAN
ITALIAN
ENGLISH| 1. | [character] indurire |
| 2. | [material] rendere più resistente |
Complétez la séquence avec la proposition qui convient.
Who's that boy? I don't know ….