The s _______here is very rich. And you can always have a good harvest every year.
The thief ran out of the house, jumped over the _______around it, and disappeared into the distance.
  So far, hundreds of s _______ have been launched into space,circling the earth.
  I wonder when the price of houses will d _______so that we ordinary people can afford a flat.
AII these difficulties can _______(衡量) your ability.
The e_______ of my car has broken down, so I have to wait for aid at the roadside.
  The green leaves take in carbon dioxide and let off o_______.
  In the past three _______(十年) , great changes have taken place in our country.
Cars and trucks are v_______. They bring us much convenience.
  Each  year Americans _______(消耗)  a high  percentage of the world's energy.