1. My father began working for this company in 2000
-> My father has worked  for this company since 2000
2. If I were her, I wouldn't buy that house
-> I adviced her not to buy that house
3. She shouldn't use mobilephone in the class.
-> She had better use mobilephone in the class.
4. Minh has learned English for 3 years.
-> Minh started learning  English 3 years ago 
5. Hoa drives to work everyday.
-> Hoa goes  to work by car everyday.