I.单项选择Go and get your coat. It's _______ you left it.
--- How much do you know about the 3D film technology? --- A little. Not until ________ the hot movie Avatar ________ some about it.
—Last night Ted was late for the party again. —You know, ______.
If you _______ this newspaper, you’ll get an extra magazine.
I still find the story Tom told us is very interesting but _____.
_______ the secret of nature, the young scientist has little time for entertainment.