Question

Fill in the numbered blanks
As the heart disease (0) is continuing(continue)to be number one killer in the United States ,researchers(1)________(become) increasingly (2) ______(interest)
in identifying the potential risks factors that (3) ______(trigger) heart attacks. High fat diets and life in the first lanehave long (4)______(know) to contribute to high incidence of heart failure

Answer 1

Answer:

becoming

interested

triggered

known

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