Complete the text about Albert Einstein's early life with these words . There is one extra word .
carefully , carelessly , clearly , hard , perfectly
Albert Einstein was born in Ulm , Germany on 14 March , 1879 .
He was very clever and worked ....at primary school . When he was six , he built mechanical models , which worked ....!
When he was ten , a family friend gave him books to read about mathematics and science . Einstein thought .... about the things he read and began to do his own mathematical investigations .
When he was a teenages , he didn't enjoy secondary school and didn't pass his exams .
He left at 16 . That year , he oerformed his first famous thought experiment .In the experiment , he was travelling along a beamm of light . He sam this.... in his imagination .
+ proszę o przetłumaczenie tekstu .