In fact fuels we burn and plant food we eat ______ their chemical energy in the form of heat.
| A．give in | B．give off | C．give away | D．give up |
Mr. Smith, _______ of the _____ speech, started to read a novel.
| A．tiring; bored | B．tired; bored | C．tired; boring | D．tiring; boring |
Sarah，hurry up! I’m afraid you don’t have time to__________.
| A．get change | B．get changing | C．get to change | D．get changed |
My sister will get up early tomorrow morning，because the train to London _________at 6:00 a.m.
| A．will leave | B．is going to leave | C．is to leave | D．leaves |
After he retired, Mr. Green _______painting, but soon lost interest.
| A．took up | B．gave up | C．made up | D．used up |
Work hard at your lessons, ______ you’ll fail the exams again.
| A．and | B．but | C．otherwise | D．besides |