Humans are destroying nature day by day, ________, of course, will cause punishment sooner or later.
The building ______ roof we can see from here is a hotel.
We have already said a good deal about the various problems _______ the war.
Theory is ______ in that it can provide a direction for practice.
The boy then led her into the warm hall and left her ______ by the fire.
Between the two mountains _________ the factory where my father used to work.