1. 1, 2, 6
2. 1) She does not come home early.
2) Does her brother drive a car fast?
3) My sister never waits for me.
4) Would you be able to help me tomorrow?
3. 1) Mother cooked a very tasty dinner yesterday.
2) Tomorrow Nick will not go to school.
3) Kate does not write letters every day.
4) You saw your friend yesterday?
5) Where will your mother go tomorrow?
6) Your mother cooks every day?
4. 1) The weather is 3) getting colder and 4) autumn has arrived, 5) birds are leaving their nests 2) and flying to the south.