Question

What do Spanish infinitives end in?

-er, -or, -ur

-ar, -er, -ur

-ar, -er, -ir

-ar, -er, -or

Answer 1

The last two options are correct. The answer could be -ar, -er, -ir, or -or.

Answer 2

The correct answer is: -ar, -er, -ir.
(-or and -ur are NOT verb endings at all)