Abeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice
Herefusedtotelluswhetherhe________(undertake)thejob.
Hefellasleepimmediatelylastnight;hemust________(be)verytired.
Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.
Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
