Translate the phrase by finding the infinitive and conjugating it to match the subject.

we walk. → nosotros

he plays the guitar. → él la guitarra.

you answer. → tú

i skate. →yo

1. In Spanish, to walk is said 'caminar.' Now, that is an infinitive, and we need to conjugate it to match the pronoun nosotros (=we). The correct answer is caminamos. Because the suffix -mos refers to nosotros.
2. The verb to play in Spanish is 'tocar.' Given that there is no suffix for third person singular in Spanish, the correct answer is toca.
3. In Spanish, to answer is said 'responder.' Apply the suffix for second person singular (-s), and the correct answer is respondes.
4. The verb 'patinar' means to skate, so the correct answer would be patino.