Answer:
Hoy tengo que comprar verduras y tengo que cocinar una ensalada para la cena.
Step-by-step explanation:
This means: Today I have to buy vegetables and I have to cook a salad for dinner. The verb "tengo que" is always followed by the verb in infinitive. It's the same in English when the expression "have to", the verb is always in the infinitive. It cannot be conjugated, it would be grammatically incorrect.