yes u wont get into trouble
I think its "Eliza planned to take the train to the fairgrounds on Thursday afternoon" and "Travis practiced pitching to the side of the house until his mom got mad"
I picked those two because of the definition of an infinitive
"the infinitive is a grammar term that refers to a basic verb form that often acts as a noun and is often preceded by the word "to" "to sing" is an example of infinitive"
I hope this helps sorry if im wrong ^-^
Answer:
C... the main purpose of a suffix is to show what part of speech the word is...eg. noun or adjective