Написать в питальний и заперечний форме каждое предложение 1)i heard somebody outdoors. 2)she fought a new dress yesterday. 3)they wrote letters to their friends.

1)I heard somebody outdoors. I did not hear anybody outdoors. Did you hear anybody outdoors? 
2)She bought a new dress yesterday. She did not buy a new dress yesterday. Did she buy a new dress yesterday?
3)They wrote letters to their friends. They did not write letters to their friends. Did they write letter to their friends?