Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.

Iwonderifhecouldgetit________(do)beforetomorrow.

Wooddoesnotconductelectricity;________.

heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.

Howlong________they________(dig)theditch?