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
You use the verb ser to describe the date, origin, characteristics, time, occupation, and relationships. You use the verb estar to describe location and feelings.
1 c
2 a
3 b
4 d
5 d
6 b
7a
8b
9 c
10 c
11 d
12 d
13b
14 a
15 a
16 d
17 b
18 b
19 d
20 b