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课时作业(十四) 必修3 Unit 4 Astronomy：the science of the stars Ⅰ.单项填空 1．I was still sleeping when the fire________，and then it spread quickly. A．came outB．put out C．broke out D．broke down 2．—I seem to be useless and I can do nothing well. —________，Peter.It’s not that bad.Things will get better. A．Turn up B．Bring up C．Break up D．Cheer up 3．—I was so disappointed when I failed again. —Don’t be so discouraged.You’ll be successful________. A．for some time B．at one time C．on time D．in time 4．Many more policemen should be sent to________them________some endangered animals. A．prevent；to hunt B．stop；hunting C．keep；to hunt D．keep；hunting 5．All people，________they are old or young，rich or poor，have been trying their best to help those in need since the disaster. A．even if B．whether C．no matter D．however 6．The President said，“________is our hope that the two countries will work together in these scientific fields.” | 
