toughen
[ˈtʌfn]transitive verb Conjugaison
1. | [character] indurire |
2. | [material] rendere più resistente |
1. | [character] indurire |
2. | [material] rendere più resistente |
Complétez la séquence avec la proposition qui convient.
I have a sore throat because I … all night long.