kaitlynfairyheart kaitlynfairyheart 08-03-2017 Spanish Answered Fill in the blank with the form of ser you would use with the following: Elena __________ morena. Fill in the blank with the form of ser you would use with the following: Los profesores __________ serios. Fill in the blank with the form of ser you would use with the following: Ellas __________listas.