8. раскройте скобки, употребляя нужную форму прилагательных: 1. this cat is … than that cat. (big) 2. this book is … than that book. (bad) 3. peter is … boy in her classes. (short) 4. this book is … of all i have read this year. (interesting) 5. i went to bed much …than normal last night. (late)

1.bigger.
2.badger
4.more interesting

1)bigger
2)worse ( iskluchenie)
3)the shortest
4)the most interesting
5)later

Well, my parents are working and I am with my sister do cleaning."
"am" здесь лишнее, потому что речь идёт о действии, а "am" = "to be" - обозначает состояние.

"What with the cook, everybody in my family do it for themself."
"themself" говорить нельзя, нужно "themselves"
"What with the cook" - конструкция, не свойственная для английского языка, это просто дословно переведенная на английский фраза "что насчёт еды... ". Постарайтесь перефразировать как-нибудь попроще.

"For how days you going? Did you it in the past?"
Первое предложение построено неверно. Получается "На какие дни ты идёшь"
Нужно что-то вроде "How long are you going to do it?"
Во втором пропущен смысловой глагол:
Did you do it in the past?

1 Newspapers are read by my father every morning.

2 Food is bought for our pets twice a week.

3 Bananas are loved by monkeys.

4 A lot of questions were asked by the students at the conference.

5 Detective stories were written by Agatha Christie.

6 Your homework will be done by you  tomorrow.

7 A special cake will be baked by my grandmother for my birthday.

8 His education is paid by Mike's father.

9 A test in English was written very well by me yesterday.

10 London is visited by many tourists every year.