The scientist knew nothing about the matter, because he was always ______ himself in his study.
I find it astonishing that she _____ treat you like this in public.
-- What is Mr. white, do you know? -- I don't know exactly. But I think he can be but a doctor.
Willie has complained to the sales manager about the PC he bought _____ screen exploded for no reason.
There is a saying that "Never put off until tomorrow what you can do today."
The growing interest in ____ history is clearly evident in ____ number of people visiting museums and country houses.