在以下的段落中，找到并更正三个错误的语法或拼写错误。


John haf finnished his homewerk and went to beed earty. He is eksited because tommorrow is the first day of his new job. He have alreddy met with his boses and they sem to bee nice. The pay is good and he hope to gradly improv his career.
1. "haf" should be "has"
2. "homewerk" should be "homework"
3. "beed" should be "bed"
4. "eksited" should be "excited"
5. "tommorrow" should be "tomorrow"
6. "have" should be "has"
7. "boses" should be "bosses"
8. "sem" should be "seem"
9. "bee" should be "be"
10. "gradly" should be "gradually"

Corrected Paragraph: 
"John has finished his homework and went to bed early. He is excited because tomorrow is the first day of his new job. He has already met with his bosses and they seem to be nice. The pay is good and he hopes to gradually improve his career."