Please can you explain why 'Rester" is used in this answer to a test question rather than simply using the future of to sit and, secondly why not 'il finisse' after jusqu'à ce que?
How would you say "Ben will sit at that desk until after he's finished his homework." ?Ben restera assis à ce bureau jusqu'à ce qu'il ait fini ses devoirs.(I did post this earlier in the week but have not had a response. many thanks)