Rewrite the following sentences so that they have the same meaning

Exercise 3: Rewrite the following sentences so that they have the same meaning.
1. John has worked for this electronics firm since 1999.
John started _____________________________________________________________
2. Women have been fighting for their rights since the middle of the 20th century.
Women began_____________________________________________________________
3. I began living in Ho Chi Minh City when I was 8.
I have __________________________________________________________________
4. She has taught the children in this remote village for five months.
She started ______________________________________________________________
5. Scientists began to fight against AIDS in 1980.
Scientists have____________________________________________________________.
6.The Browns have lived in London for 20 years.
The Browns began________________________________________________________