Hãy giúp mk với:(((((((

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4. The Browns began living in London 20 years ago.
5. John started working for this electronic firm in 1999.
6. Women began fighting for their rights in the middle of the 20th century.
7. When did you started studying English?
8. How long have you done research on lung cancer?

I/
1. We haven't seen Tom since I moved to Bristol.
2. She hasn't written to me for nearly 2 years.
3. This film hasn't been shown on TV for nearly 10 years.
4. She hasn't swum in the river for 3 years.

5. I haven't visited the city museum for 5 years.
6. I last attended the club in 1988.
7. I last saw him 2 months ago.
8. I last went swimming 2 years ago.