Answer:
I was on a robotics team. My role was to be the mathematical person.
Answer:
The tour guide, who has become a good friend, is great!
Explanation:
The commas help separate the two ideas in one sentence correctly. A good way to check that this is correct is to remove the words separated by the commas - "who has become a good friend" - and check if the sentence still makes sense. In this case it would be "The tour guide is great!" which makes sense as a sentence. Thus, this version of the sentence is correct.
Answer:
Incorrect: They loved an movie. I will be here in a hour. Pat works at an University.
Correct: Now I have a house and I am happy.
