5770 - Intermediate\Upper-Intermediate Test:2 - Heart disease remains the ______ of diseases. It killed about 750,000 Americans last year, almost 40 percent of all

Heart disease remains the ______ of diseases. It killed about 750,000
Americans last year, almost 40 percent of all ______.
most killing / die
threateningly / deaths
most deadly / deaths
more danger / death
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