determine whether the underlined word is a participle or a gerund for questions 4-6

4. meg took a cooking class to improve her culinary skills
a.participle
b.gerund

5.if you're good at swimmimg, you could be a lifeguard at the beach
a.participle
b.gerund

6.can you get paid for reading?
a.participle
b.gerund

determine whether the underlined word is an infinitive phrase or a prepositional phrase

8. many go to the library to find rare magazines and academic journals
a.infinitive phrase
b.prepostioal phrase