Помогите составить 15 предложений по английскому. Первое предложение утверждение, второе отрицание, третье вопрос

Ann is the best pupil in the class.

Ann isn't the best pupil in the class.

Is Ann the best pupil in the class?

I have done my homework.

I haven't done my homework.

Have I done my homework?

You called me yesterday.

You didn't call me yesterday.

Did you call me yesterday?

I think I will buy that dress.

I don't think I will buy that dress.

Do I think I will buy that dress?

I am walking with my friends now.

I am not walking with my friends now.

Am I walking with my friend now?