D. State boards of education are those who determine the content of textbooks.
Obviously, students and students' parents have nothing to do with this decision. Ultimately, teachers don't either - they are there just to teach the material found in the textbooks.
Answer:
The boy sat. That could be a subject. The predicate is the half-sentence you have right now. So, it could be The boy sat in the window seat on the plane.
Explanation:
A subject contains the noun. A predicate contains what the noun does.
I ain't sure of what the question is exactly but I assume it has to go like this
"Have you left Hawaii before writting this letter?"
Expository text will focus on educating its reader. Other descriptors of exposition are clear, concise, and organized writing.