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first, gasping the ACTUAL meaning that the author wanna to convey.
A:significantly compounding the effects of drug and alcohol abuse , which <ALREADLY> are a cost to business of more than $100 billion a year.
here it is the <drug and alcohol abuse>--that cost business more than $100b.
B: clear. here which refers to<drug and alcohol abuse> A of B (modifier could potentially refer either to "B" by itself or to the whole unit "A of B". It's up to context to determine which) |
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