Hello Sue,
Timeline: History of Former President Bill Clinton's heart problems and procedures Quote:
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* In early September 2004, after he complained of chest pains and shortness of breath, his doctors discover that 90% of his coronary arteries are clogged and he is grave risk of a heart attack.
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- ...he is grave risk of a heart attack.
- ...he is at grave risk of a heart attack.
- ...he is at a grave risk of a heart attack.
I think that the second is grammatically correct. The first can't be correct. Do you think the third is correct?