Yo siempre digo la verdad.
You can use any form of the verb, but it has to be indicative. I have used the <u>present form</u> (the most used in these cases) of the verb "decir" (say).
Answer:
Digo.
Explanation:
the books are difficult
Es corrrecta si la descrubrio crsitobal colon y tenia 3 barcos la pinta, la niña y la santa maria
