refuel

[ˌri:ˈfjʊəl] ( (UK) pt & pp refuelled, cont refuelling, (US) refueled or refueling )
transitive verb Conjugaison

rifornire di carburante

[ˌri:ˈfjʊəl] ( (UK) pt & pp refuelled, cont refuelling, (US) refueled or refueling )
intransitive verb Conjugaison

rifornirsi di carburante

Mots proches

refuel

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Allemand

Complétez la séquence avec la proposition qui convient.

These exercises ….
- are very difficult
- is difficulty
- are exercises difficult