______is known to us all, only the theory ______ on practice can be practical.
He was standing there with his hand ________ his bike.
Few pleasures can equal _________ of a cool drink on a hot day.
--____ was it___ they discovered the entrance to the cave of the ancient paintings?---It’s a total coincidence.
In my opinion, what he told us just now about the matter doesn’t make any_______.
.Sorry, I couldn’t help _________ the house, because I was busy making a cake.