A.1)I am happy to work at the factory.
2)I am glad to see you.
3)I am glad to study French.
4)I am happy to live in this town.
5)I am happy to know this man.
B.1)I am happy about I am going to Paris.
2)I am happy about Im spending my holidays in the Crimea.
3)I am glad about listening this symphony.
4)I am glad about reading his letter.
Где-то могу ошибаться. В общем как-то так.