Mary had finished her homework ____ the time I got home. [ ]

Every time when something ____ me, I turn on the radio and listen to music.

Why does Mary look so sad? – Maybe the things _______ she saw made her think of her grandmother.

Garth Brooks’ records sell well. He has sold more than 120 ____ records. –But I still hope to see him live one day.

Will you stay at home until your sister comes back? —Sorry, I _______. I have a meeting and have to go in ten minutes.