Отрицательные:
1. I don't know how to say in English ginseng
2.Ann wasn't writing a letter in her room
3. Yesterday Ann didn't watch TV.
4. We won't (will not) visit Moscow next week.
5. She doesn't play tennis every weekend
6. I am not writing now
7. The car doesn't break down
8. He didn't work at school last year.
Вопросительные:
1. Do you know how to say in English ginseng?
2. Was Ann writing a letter in her room?
3. Did Ann watch TV yesterday?
4. Will we visit Moscow next week?
5. Does she play tennis every weekend?
6. Do you writing now?
7. Does the car break down?
8. Did he worked at school last year?
Объяснение:
В предложениях с Present Simple при вопросительных предложениях окончание -s убирается, т. к оно переходит в does.
В предложениях с Past Simple при вопросительных предложениях окончание -ed убирается, т. к появляется вс глагол did.