The picture looks good ____ the white wall.
_____ the front door _____, he had to enter the room through the back door.
_____ the diamond, he had to look for a place to hide it.
The dog, _____, will be made a good watchdog.
--- Have you considered _____ your job as a teacher? --- Yes. I like the job because a teacher is often considered _____ a gardener.
When he was a boy, he used to go there and watch _____.