Не согласись hi is happy today. this is my tree house. this is my sister. she is 10.my favourite food is cheese

he isn't happy today.

this isn't my house.

this isn't my sister.

she isn't 10.

my favourite food isn't cheese. 

1. yes ofcourse, its important part of school life, and especially for discipline.

2. we have primary and high schools, and some private schools

1.if you work ’ll pass your exam. d)hard. 2. would you like to drink? a)something 3. you can your knowledge of english if you read more. b)improve 4. it is often quicker to travel by train than by bus. is cheaper.    a)in addition to, 5. what subject at the university is ? b)the most difficult