1. My mother is not a doctor, she does not leave ...My mother is a doctor, she leaves ...Is my mother a doctor? Does she leave ...2. In the evening we did not gather ... We did not watch TV and talkIn the evening we gathered ... We watched TV and talkedDid we gather...? Did we watch TV and talk?3. Nick and Jack are not ... We are not...Nick and Jack are... We are...Are Nick and Jack ...? Are we classmates?4. Nick is not ... He does not ...Nick is ... He playsIs Nick ...? Does he play...?