It's __________ comfort to know there is someone to keep __________ eye on the kids.
Those who know ____ it was that wrote “ A Tale of Two Cities”, raise your hands.
If better use ______your spare time,you’ll make good progress in doing your business.
I didn’t know the girl youthe sheep.
_______ the tower building,where you can see the whole city.
Why did they keep trying _________ they must have known it was hopeless?