Помогите срочно решить!!!
хватит ли 15 литров кислорода для сжигания 4 граммов серы

В три ведра объемом 10 литров каждое налиты вода,спирт и ртуть. Определите массу жидкостей.

Закончи эти предложения с помощью местоимений в нужной форме.

1. Tom doesn't like Jerry. Jerry doesn't like Tom. are 
not friends.
2. Please, take this apple. -- I don't like ... .
3. Sam's father is forty-four. ... father is a bus driver. ... drives buses.
4. Hello! Where are you? I don't see ... !
5. We see Mary. We see ... in the garden but she doesn't see ... .
6. Where is ... new house, Dan?
7. Sam likes computers. Show ... your new computer, please.
8. We have a new pupil in ... class. ... name is Liza. We like ... .
9. Mrs Wilson has three children. ... often takes ... to the zoo.
10. Happy birthday, mum. I love ... .
11. Our father sometimes takes ... to the cinema.
12. Emma! Do  you like music? -- Yes, I do. I like ... very much.