—Mary, new copies of Harry Potter are on __________ now. —Great! Let's go and buy one this afternoon.
There was never any time for Kate to feel lonely, _____ she was an only child.
–No.3 player runs quite fast. --Yes, but there’s no doubt _____ Liu Xiang will win in the end.
Are you ________ of the mistakes you made in your final English test?
Some of this heat near the earth’s surface _________ make electricity.
The cunning fox tricked the little rabbit _________ picking up the carrots in the field and then caught it.