In fact fuels we burn and plant food we eat ______ their chemical energy in the form of heat.

Everything seemed to be going ________for the first two days after I moved to New York.                                                                  

—Oh, doctor, The wound on my leg is infected.  —You really shouldn’t have left it _______ to the sun. 

(2013·山东师大附中一模)To the great disappointment of the poor workers, a great part of their wages were ________ by the boss for no good reason.

If you don’t get up early, you’ II ____the bus.