____ is known to us all is that the old worker, for _____ life was hard in the past, still works hard in his seventies.
This house will probably come on the ______ next month.
They have considered their high standard of living a(n) ______ for practicing their basic beliefs.
The background music in an assembly line is designed ______.
Information and opinion gap exercises have to have some content ______ talking about.
We know our friends by their defects ______ by their merits.