To succeed in a scientific research project ________.
A
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Hefellasleepimmediatelylastnight;hemust________(be)verytired.
Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.
Howlong________they________(dig)theditch?
Iwonderifhecouldgetit________(do)beforetomorrow.
“Haveyoumovedintothenewflat?”“Notyet.Therooms________(paint).”