Answer:
B. Se lastimo
Explanation:
A means more than one person is present and got hurt. C means someone hurt here and D means I hurt myself, which doesn't make sense if you put that in the blank.
Answer: Somos :)
It doesn’t matter the gender in this case
3. Saliste
for the other two I need to read like a passage to answered it
Comamos is the right way to say it