"To try to write certain sentences is difficult"
The correct statements are 1, 2 and 3.
1) The sentence is correctly written. The pattern "to try to do something" is correct and can be used.
2) The sentence contains more than one infinitive. It contains two infinitive verbs. TO TRY and TO WRITE.
3) One infinitive is inside another infinitive phrase. "To try to write certain sentences" is an infinitive phrase, it functions as a noun because it is the subject of the sentences. So, the second TO INFINITIVE is inside the main infinitive phrase. (That is the reason why number 4 is not correct)
Answer:
I agree that insanity is a matter of perception. I think this because if someone is considered insane, they say and do things that don't seem logical to others. They're actions do not seem logical because we are not perceiving how they are.
The answer to that question is them. The class is a collective noun for a bunch of students that are learning from a teacher. Since we are referring to people, then we cannot use it because the noun it is used for inanimate objects. Pronouns like them are used to refer to people
1237!! Hope it helps!! Love you baby!!!