1. The children didn't have a great fun in the park.

   Did the children have a great fun in the park?

   Yes, they did.     No, they didn't.

2. There weren't 9 students in the classroom.

   Were there 9 students in the classroom?

        Yes, there were.   No, there weren't.

  3.  Ann didn't do her homework yesterday evening.

       Did Ann do her homework yesterday evening?

       Yes, she did.     No, she didn't.

  4.  I didn't read an English book last week.

       Did you read an English book last week?

       Yes, I did.      No, I didn't.