Дополните диалог подходящими по смыслу словами или предложениями.
Olga: My mother-in-law drinks such strong tea.
Nina: 1_______?
Olga: Because she has heart problems. Caffeine is not recommended for people with heart problems.
Nina: Does tea 2_______ much caffeine?
Olga: Yes, it does. A cup of strong tea contains more than 100 mg of 3_______.
Nina: I think that it is healthier for everybody to drink 4_______.