Responsible
Because he knows he has to do what he promised to do.
Hope this helps!
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.
Answer:
B is your answer :)
Explanation:
Both parts of that sentence could stand alone as there own sentence.