________ is known to us all is that the old worker, for _______ life was hard in the past, still works hard in his seventies.
He is the only one of those clerks ________ to the important conference.
When I turned to Tony for help, I found that the more he tried to explain, ___________.
The two boys share the same hobbies but they are quite different _______ personality.
It won’t be a very long time _________ he is in business for himself.
No regular advertiser dare produce anything that fails to stick to the _______ of his advertisement.