Comrade Li ________ be in Beijing because I saw him in town only a few minutes ago.
B
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Wooddoesnotconductelectricity;________.
Thefloordoesnotlooksobadwhen________(sweep)clean.
Ifound________toanswerallthequestionswithinthetimegiven.
Howlong________they________(dig)theditch?
Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.