I think the answer is les.
For this case the sentence must be written in simple past.
Therefore, the structure of the prayer should be given by:
Subject + main verb in the past.
The sentence written correctly in English is given by:
I started at ten o'clock
The translation is Spanish is:
Yo empecé a las diez en punto
Answer:
2) empecé
Yo empecé a las diez en punto
"El misterioso astronauta."
or it could be
"El molestoso astronauta"
1. Si, son míos.
2. Si, son de ellos.
3. Si, es mío.
4. Si, son de mi prima.
5. Si, son tuyos.