Объясните, почему вам или кому-либо пришлось сделать что-либо в определенной…

1. The bus was overcrowded, so I had to take a taxi.2. It was raining heavily, so I had to take an umbrella.3. My son could not translate the text, so I had to help him.4. The bus was laving in 5 minutes, so I had to hurry up.5. He was having his exam at the end of January, so he had to work hard.6. Something was wrong with the TV-set, so I had to call a specialist.7. His wife was away on business last week, so he had to cook meals.8. We didn't get tickets for the evening performance, so we had to go to the morning performance.