— How could you ________ my sister so easily in the crowd? — Because she stood out in her red dress.
Asia is______the largest continent in the world.
_____explanation is necessary.
He is_____his elder brother.
Those ___ want to see the film please put down your names here. A which B what C whose D who
. Lily would never forget the evening ____ she lost the ring. A which B when C at which D where