After a series of researches, they finally ___ that the pollution was the leading factor contributing to the death of the creatures in the river.
—Thank you so much for the lovely evening, Dennis. —You’re quite welcome, Julie. ____. We’d been looking forward to seeing you.
—Did your classmate accept your invitation? —No, he ____ refused.
Though I ____ to go abroad, I changed my mind and decided to stay with my family.
In Scandinavian countries it is common ____ for the husband to stay at home to look after the baby.
The president stood by a window inside the room, ____, looking over the square.