The program is like a window on the world ____ you sit by it and fix your attention on what it shows.
As we know, ___ life is hard for any of us.If we want to live ___ happy life, we must work harder.
He is ___ me in position in the company, but he doesn’t lift up his horn(盛气凌人).
Only after they had discussed matter for several hours ___ a decision.
—It’s nice. Never before ___ such a special drink! —I’m glad you like it
Only when he reached the house ___ it was the same place he’d been in last year.