In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Q: Most polyps cause no symptoms and take five to _ years to change to cancer.

A: seven
****
Q: Death usually occurs by five to _ years of life due to pneumonia or other infections.

A: eight
****
Q: Heart attacks are _ times more likely to be fatal for a person who is depressed.

A:
five
****