Answer the questions with short answers. If there's an (A), write an affirmative answer. If there's an (N), write a negative answer. Use contractions with negative answers. For example, for Is Professor Winters a woman? (N), write No, he isn't.

1		Is Professor Winters a boring speaker? (N)
2		Is he in his office? (N)
3		Isn't he in a classroom? (A)
4		Isn't Doctor Martha Silbert a scientist? (A)
5		Is she in the English Department? (N)
6		Is she busy? (A)
7		Are those students interested in the lesson? (N)
8		Are they tired? (A)
9		Aren't they twins? (N)