Independent Clauses:
The two correct independent clauses from the provided examples are:
- I am going to wash the car, buy groceries, and walk the dog this afternoon.
- Stephen, Aliki, and Ahmed spent the weekend together at the amusement park.
Noun Clauses:
The two sentences that use a noun clause are:
- Emily spent several days thinking about what she had to do in order to make a good grade.
- Why they didn't return any of my phone calls or emails is the question I want answered.
Adverbial Clauses:
The two sentences that use an adverbial clause are:
- So that we would have enough left for tomorrow, we only used half of the vegetables in the salad.
- Javy was named captain of the team despite it being his first year on the team. (Note: "despite it being his first year on the team" is an adverbial clause of concession.)