Sentence 1: Tia was having trouble seeing the blackboard in class. 
 Sentence 3: Tia was still having trouble seeing 
 Sentence 4:  Her mother brought her to the eye doctor 
 Sentence 5:  Tia got glasses and could see in class 
 Option 1: The teacher took Tia to the eye doctor. 
 Option 2: The teacher moved Tia up to the front row.