Put there sentences into past and future indefinite:

Nicotine is a one of strongest vegetable poisons.

Smolers more frequent are ill on the on the lung fever, tuberculosis and other diseases.

Physical and psychological dependenke on nicotine develops far quickly far quickly, than from an alcohol.

Past Simple

Nicotine was a one of the strongest vegetable poisons.

Smokers more frequent were ill on the on the lung fever, tuberculosis and other diseases.

Physical and psychological dependence on nicotine developed far quickly than from an alcohol.

Future Simple

Nicotine will be a one of the strongest vegetable poisons.

Smokers more frequent will be ill on the on the lung fever, tuberculosis and other diseases.

Physical and psychological dependence on nicotine will develop far quickly than from an alcohol.