Верны ли определения? А) Внешние эффекты – это издержки, которые проистекают из экономической сделки для третьей стороны

1Не is reading a book now.
2. She is doing her home work.
3. My mother is sitting at the table now.
4. I'm still writing a letter.
5. They are playing football.
6. It is snowing now.
7. We are having dinner now.
8. It is still raining .
9. Why are you talking?
10. The girl is drawing a picture at the moment.