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 ...​

эти слова используются в качестве вводных слов.обычно они используются в аргументированных письмах.

if you write neatly, your homework will look nice

по моему, вот так, но насчет второй части я не уверена

here already whole year i visit a circle of archeology and ethnography at the palace of children's and youthful creativity, therefore i have spent half of last summer on archaeological expedition. we lived in tents, cooked food on a fire and were engaged in the present scientific researches — dug out settlements of ancient scythians. therefore should be clear that any, even the smallest rain was perceived, more likely, as disaster, instead of pleasure. once during excavation we were found by the strongest downpour. in a moment it has filled with water all hollows, and children still tried to ship on a free stretcher свежевыкопанные trophies: bones, crocks, instruments of labor. when we have gathered, a rain припустил with such force that all has around turned white. we badly distinguished each other from distance of three meters and, certainly, were dripping wet. we needed to go to camp on a country road which размокла and has turned to a bog. wetted through, dirty, but not lost courage, we have reached camp. here and the sun has looked out, as if there was no rain. has warmed, припекло — and in some hours even a trace doesn't remain from pools and the streams, disturbing to us to reach native tents. only the clothes and the footwear which has been hung out on ropes, branches and the stakes hammered into the earth, reminded of incident. certainly, the adventure was not from pleasant, but with what pleasure and laughter we remembered it after! besides this case has appeared original check on our readiness, mutual assistance and the serious relation to work. and we have passed examination on excellent"!

1) i never object to being invited by someone. я никогда не возражаю  против того, когда кто-нибудь приглашает меня.

2)  i like to participate in different kinds of fun.  мне нравиться  принимать участия в разных видах развлечений.

3)  i am never guilty of doing something wrong.  я никогда не бываю виноватой, когда сделаю что-то не так.

4)  my family  are not used to getting up early.  я не привыкла рано вставать.

5)  i am not capable of offending  a  child.  я   не способна обидеть ребенка.

6) i usually get tired of doing my homework. я обычно устаю от выполнения работы.

7) i and my  younger brother  would like to participate in olympic games. я  и мой младший брат  хотели бы принять участия в олимпийских играх.

8)  we are  really interested in learning foreign languages. я действительно заинтересованы в изучение иностранных языков.

9) all of my raletives are looking forward to new year's day. все мои родственники с нетерпением ждут дня нового года.