—Li Ping, your cousin speaks fluent English, like a native speaker.—No wonder. He once _____ in New York for two years as a visiting professor.
_____ 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 _____.
It’s too hot today. Why not ____ your coat?