1 Write what Nurzham can('t)/is(n't) able
to do now and what he could(n't)/
was(n't) able to do when he was 8.​

Зад.1  watch-часы (наручные), один экземпляр..  watches - это несколько часов. Специфично слово - deer (олень, олени). Множественное число  этого слова совпадает с единственным, нет окончания (e)s. Еще слово teeth - мн. число образуется изменением корня (tooth-teeth, зуб-зубы)

Объяснение:

Правила произношения и написания окончаний существительных во множественном числе зависят от исходного слова. Общее правило - конечные звонкие согласные не оглушаются, то есть произносятся как z-iz. Вот тут коротко и ясно: https://engblog.ru/plural-of-nouns

1. They haven't done anything. Have they done anything?
2. He hasn't given them any money. Has he given them any money?
3. You haven't brought anything for us. Have you brought anything for us?
4. I haven't taken any English books from you. Have I taken any English books from you?
5. She wasn't reading anything. Was she reading anything?
6. He hasn't written a letter to anybody. Has he written a letter to anybody?
7. Nobody by the name of Petrov lives on the third floor. Does anybody by the name of Petrov live on the third floor?
8. They don't have any English books. Do they have any English books?
9. There aren't any tall trees in front of their house. Are there any tall trees in front of their house?
10. Peter doesn't have anything in his box. Does Peter have anything in his box?
11. There aren't any parks in his town. Are there any parks in his town?
12. There aren't any good bookshops in our district. Are there any good bookshops in our district?