Помогите по английскому. С единст. числа на множественное

1. They are stewardesses.

2. timetables are

3. tickets are

4. there are jet planes

5. bus stops are

6. they are

7. airports are

8. friends are

9. they are russians

10. pilots are men

11. there are non-stop flights

12 there are me suitcases