You didn't underline anything, so we cannot know for sure what the correct answer is. However, I'll just write down the entire infinitive phrases in these sentences, and you can see the answer based on that:
1. to see a great play
2. to cheer good plays
3. to practice until you know all the plays
D. pick one point of view and stay with it
Answer:
- In the 1920s, there was a HUGE technological advance, meaning people were starting how to program and build machines, and using those newfound skills to their advantage,
Explanation:
Basically, people built machines to do work faster, which made more products, which meant more customers. People didn't have to spend a huge amount of money to profit a huge amount of money. That means poor/unemployed people got jobs, and it went down like clockwork, as more customers came, they needed more people, making more jobs, making more money, making the economy skyrocket.
Answer:
The reign of Augustus from 27 BCE to 14 CE brought peace and security to both politics and trade. The Roman Senate granted Augustus almost unlimited powers, bringing reform to both the city and provinces. He became the “first citizen” or princeps, thus initiating the principate.
“About Mars” is the Adjective Phrase.
Adjective phrase describes “what kind of which ones”
So for example here
“After school, I looked for books about Mars.”
“About Mars” describes the kind of books so that makes it an Adjective phrase.
I hope this helps.