As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
The doctor finally gave up the ____ of medicine for full - time writing.
All the staff in our company are considering _________ to the city center for the fashion show.
Ten people died in the car accident, two children _________.
__________ and happy, Tony stood up and accepted the prize.
I regret _________ you that you can't ________ the game.