Answer:
In my opinion Spanish is a language humans should learn.
Explanation:
Spanish is a commonly used language and if humans want to communicate better we should learn Spanish.
A) I used to think
B) I will think
C) I was thought
D) I had thought
E) I have been thought
F) I will be thought
G) i will have thought
H) I have thought
I) I was thought
J) I will have been thought
K) I had been thought
L)I think
:)) hope it helps