so cold! Why are your windows still open —- Oh, they _______．

Many old people take a walk after supper ____ have good health.

Beijing government puts more than 700 million yuan to increase its green space this year,____________ doubles the money provided last year.

—There’ll be billions of people to watch the Spring Festival gala on TV tonight.—I know.The whole world ________.It’s a really wonderful event.

You should have informed me that thelecture was canceled. I ________ all the way here through the heavy rain.