Many random citizens would use an entrance hall to enter this sort of building. What is it? - school - public building - large building - auditorum - convention center  The best answer is
public building

Where might a child go who has no home? - school - orphanage - most homes - recreational - pen  The best answer is
orphanage

The child had learned music by ear, he had never even seen it what? - opera - written on paper - composed - teacher - stolen  The best answer is
written on paper

A person doesn't have to keep going to school to what? - continue learning - talk to himself - cast shadow - go broke - cross street  The best answer is

continue learning