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It was a day like every other in Tom's job. He made all his duties precisely: he dusted, cleaned a floor and windows in all offices in the company. It wasn't a pik of his dreams but he had to work as cleaner because his brother was suffering from an incurable disease and need specilist care. While tom was cleaning his boss office mr. Smith came and started going around his desk nervously. Tom asked what had happend and found out that something is wrong with main computer and the boss need some date immediately. Mr. Smith told that the day before he fired computer scientist. The cleaner offered that he can try to fix the computer because in the past he studied informatics. Tom was checking all files andconnecting of cables. After a few minutes he managed to find reason of malfunction. The boss was very grateful and offered him work as an computer scientist. It was the day when Tom's dreams come true. Since this moment Tom earned much more money and shorter than before that's why he colud spent much time with his brother.

He 'made' (kalka z polskiego 'zrobil' - ale po ang inaczej...poszukaj i napisz) allis duties precisely: he dusted, cleaned 'a' THE floor and WASHED THE windows in all THE offices in the company. 'It' (do czego to 'it' sie odnosi?) wasn't a 'pik' (ortog) of his dreams but he had to work as
A cleaner because his brother was suffering from an incurable disease
and needED 'specilist' (ortog) care. While Tom was cleaning his boss office Mr.
Smith came and started going around his desk nervously. Tom asked what
had 'happend' (ortog) and found out that something 'is' WAS wrong with THE main computer and the boss needED 'some date' (nie rozumiem o czym tutaj mowisz) immediately. Mr. Smith told (komu?) that the day before he fired THE computer 'scientist' (chyba 'specialist'). The cleaner 'offered' SAID that he 'can' COULD try to fix the computer because in the past he studied 'informatics' (nie, znowu kalka, tutaj IT-Information Technology).
Tom was checking all THE files and connecting 'of' (niepotr) cables. After a few minutes he managed to find THE reason of THE malfunction. The boss was very
grateful and offered him work as an computer scientist. It was the day
when Tom's dreams 'come' CAME true. Since 'this' THAT moment Tom earned much more money and (tutaj brakuje czasownika) shorter than before that's why he 'colud' (ortog) spent much MORE time with his brother.

Dobre, byloby lepsze, gdybys pamietal o 'the'