1 Complete the sentences using 'discover', 'discovery
or 'invent', 'invention' in the right form.
1 Writing was probably the most revolutionary of all human.
2 The 15th-17th centuries were the time of great geographic ---
3 Who ... the computer?
4 Penicillin was ... by Alexander Fleming.
5 In what country was money first?
6 When did they ...oil in the North Sea?
7 The ... of the atom meant the beginning of a new era in
physics.
8 Australia was ... for Europeans by James Cook.
9 The mobile telephone is a wonderful ...​

I study at school № 17 and will tell you about my class.There are a lot of children about 27 people.I'm friends with Simon,Karina,max. Sorry that I have one student in the class.Semyon good marks,Karina horodiste,Maxim excellent grades.My favorite lessons it OUT,mathematics,labor.My class is very friendly,cheerful and we participate in many competitions.We esteem in Krasnodar,in Siver.But in our class there and fighters such as Andrey,Igor,Daniel.And I love my class!  (перевод)                       я учусь в школе № 17 и расскажу про мой класс.В нём много детей примерно 27 челове к.Я дружу с Семёном,Кариной,Максом. Жаль что я одна отличница в классе.Семён хорошист,Карина хорошистка,Максим хорошист.Мои любимые уроки это ИЗО,математика,труд.Мой класс очень дружный,весёлый и мы участвуем во многих конкурсах.Мы ездием в Краснодар,в Северскую.Но в нашем классе есть и драчуны такие как Андрей,Игорь,Даниил.А так я люблю свой класс! 

I study in a secondary school at the 7th grade. We have a friendly and united class. There are 26 pupils in our class and I am in good relations with almost all of them. I can say that I’m quite a sociable person and I have lots of friends both among my classmates and within my neighborhood. My class is rather important for me because I spend the majority of my time at school. We don’t only have lessons together, but we also attend additional school activities. Some of our pupils go in for sport trainings, some attend arts and crafts classes and some participate in school theatre. Surprisingly, there are a lot of talented and interesting pupils in our class. Personally I take part in school theatre. We often rehearse new plays and when the school celebrates something we present these plays on stage. The principle of our school appreciates it and he says that we have a good group of actors. My best friend’s name is Lena. She is my classmate and we share the same desk at the lessons. Lena attends arts and crafts classes. She is quite good at it and they sometimes organize school exhibitions. In my opinion, this positive atmosphere in our class is the result of our class teacher’s hard work. She is a great teacher and she often gathers us together for different occasions, which unite us as a class. For example, last week we had a small tea party after lessons, to celebrate a birthday of one of our classmates. Sometimes we even meet up in the city at weekends simply to chat or to have a walk.