1.   He quit smoking six years ago.

2.   She quit smoking years ago.

3.   An antidepressant drug can help people quit smoking, even those who are not depressed and would not normally take such a medication, researchers say.

4.   Bullock repeatedly tried to quit smoking, following a series of serious health problems.

5.   Emily quit smoking three months ago Monday.

6.   Furthermore, even after a woman quits smoking, the risk of developing lung cancer does not disappear.

7.   He had been diagnosed with cancer and was also told by the doctor to quit smoking, which made him even edgier.

8.   He does not drink, and he quit smoking months ago.

9.   He had quit smoking about three years ago.

10.   He quit smoking years ago and no longer drinks alcohol, another onetime stress-related dependency from his medical school and residency days.