We were busy ________ (get) things ready for the trial production when he phoned us.
getting
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Ifound________toanswerallthequestionswithinthetimegiven.
I prefer this diagram ________ that one.
Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.
he teacher told them since light ________ (travel) faster than sound,lightning ________ (appear) to go before thunder.
Herefusedtotelluswhetherhe________(undertake)thejob.
