NO SON PREPOSICIONES LO QUE NECESITAS....SINO ADJETIVOS POSESIVOS (MY - YOUR - HIS - HER - ITS - OUR - YOUR - THEIR)
SINO HAY DIBUJOS O GRAFICOS QUE TE ORIENTEN TIENES QUE ADIVINAR. VEAMOS:
WHAT ARE THEIR NAMES?
WHAT'S YOUR JOB?
WE ARE IN OUR ENGLISH CLASS.
WHAT'S YOUR PHONE NUMBER?