Нужно переделать предложения в отрицательные и вопросительные . Past Simpl Tense 1)Gymnastics (be) fun to do. 2)The teacher

1) Gymnastics was fun to do. Gymnastics wasn\'t fun to do. Was gymnastics fun to do? 

2) The teacher might open the window in the lesson. The teacher might not open the window in the lesson. Might the teacher open the window in the lesson?

3) Students could wear trendy clothes. Students couldn\'t wear trendy clothes. Could students wear trendy clothes?

4) I was in the country last summer. I wasn\'t in the country last summer. Was I in the country last summer?