Bob used to  in the countryside .but mow he is used to     in the big city 

—Mike, how about your journey to Mount Huang? —Everything was wonderful except that our car_________ once on the way. 

It took the firemen six hours to________ the fire.

He prefers ______ at home reading to ______ out shopping on Sundays.

 He can’t ___________ the difference between right and wrong.