It seems that living green is _______ easy and affordable. A small step makes a big difference.
After the new machine was introduced, the factory produced _____ in 2011 as the year before.
There ____ a temple on the side of the mountain, didn't there?
Can't we just live today, ____ the worries of tomorrow or the regrets of the rest?
Try to put the candidate ____ by being friendly and informal.
—Why can your neighbor know so much about London? —He ____ have been there before.