What do these mean?
1. I left my house 30 minutes earlier so I wouldn't be late for work.
2. I left my house 30 minutes early so I wouldn't be late for work.
3. I left my house 30 minutes early so I wouldn't be late for work.
4. I left my house 30 minutes early so I won't be late for work.
What's the difference in meaning between #3 and #4? Which one should I use?
1. I left my house 30 minutes earlier so I wouldn't be late for work.
2. I left my house 30 minutes early so I wouldn't be late for work.
3. I left my house 30 minutes early so I wouldn't be late for work.
4. I left my house 30 minutes early so I won't be late for work.
What's the difference in meaning between #3 and #4? Which one should I use?