So for the usted form, you use the 3rd person singular of the present subjunctive instead of the 2nd person singular present indivatice so, 'hable'
Interesa
Encanta
Aburre
Fascina
Importa
Answer:
Well, you will know when to use -er when you refer as verbs with infinitives ending. What you will do is drop the -er from the infinitive and add the second conjugation present tense endings: -o, -es, -e, -emos, -en.
Explanation:
To use -ar you will use the first conjugation, for example, hablar, lavar, llamar.
Because it will kill allot of people or make them berry sick
1. Volveré
2. Es
3. Dicen
4.escribiben
5. Los ponemos
6. Tenemos
