Commas and Semicolons

What word should the comma follow in the sentence: "The courses are organized and the instructors are excellent."?

What word should the comma follow in the sentence: "It was January yet the days were mild."?

What word should the comma follow in the sentence: "We stayed an extra day in Phoenix for there were many more sites to see."

What word should the comma follow in the sentence: "Will Judy be your partner for the science project or are you paired with someone else?"

What word should the comma follow in the sentence: "My friend Serena is a thoughtful reliable person."?

What word should the comma follow in the sentence: "The noisy slow-moving train made its way up the hill."?

What word should the comma follow in the sentence: "On a damp chilly morning, we started our journey."?

What word does the semicolon follow in the sentence: "I thought Brent's poem was excellent in fact, it should have won an award."?

What word does the semicolon follow in the sentence: "Shakespeare created many great plays he also wrote some memorable sonnets."?

What word does the semicolon follow in the sentence: "The team played with a lot of heart nevertheless, they could not win the championship."?