Okay so in the order you asked the questions I would say:
D
C
D
A
?
The answer is (acabe) because it refers to the fact that he has not finished his studies and when he finishes it he could finally be an astronaut.
Answer:
The yo-go verb is have.
Explanation:
Because <u>have</u> in spanish is tener, but when you put it in first person simple present indicative it becomes tengo.
