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]
(..) of the young lady in the front row. Mr. Wolowitz, this is your second warning. A sigma particle. Yes, assuming the hypothetical planet has a mass greater than the Earth. Correct! Ladies and gentlemen, I hold in my hand the final question. The score now stands. AA: , (..)2008 TvShow: The Big Bang Theory Title: The Bat Jar Conjecture Season: 1 Episode 13