Ella (escribir) otro libro.
B. ha escrito
first one is the second one "si me gustaria jugar contigo"
Second one is the second one "si voy a bailar"
third one is "vamos a jugar a las una"
Explanation:
I'll see for the rest
El cinturón because it means belt.
They are activities so most of them end in ando because of the ing
1. bailando
2. relajante
3. excursionismo
4. nadando