The plant produces a (great/large/huge) 'mass of' blossoms every spring. = The plant produces 'masses of' blossoms every spring.
The mayor is trying to encourage more commuters to use 'mass transit' in order to alleviate traffic in the city.
His policies are supported by 'the' (great/broad) 'mass of' the people. [=by most of the people]
(..) since anything I find I'll report to Deb. Unfortunately, Dorsey has led a squeaky clean life... mostly. He's a potential mass murderer with eight outstanding parking tickets. - Hey, any update? - No, nothing yet, but search teams (..)2011 TvShow: Dexter Title: Talk to the Hand Season: 6 Episode 11