Tom has continued to smoke two packs of cigarettes a day. The doctor warned him. (eventhough)
A.Tom has continued to smoke two packs of cigarettes a day, eventhough the doctor has warned him.
B.Tom has continued to smoke two packs of cigarettes a day, eventhough the doctor warned him.
C.Tom had continued to smoke two packs of cigarettes a day, eventhough the doctor warned him.
D.Tom continued to smoke two packs of cigarettes a day, eventhough the doctor warned him.

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