1. The bus was late, so I had to take a taxi.
2. It was raining heavily, so I had to take an umbrella.
3. My son couldn't translate the text, so I had to help him.
4. The bus was leaving 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. He didn't know how to do the sum, so he had to ask for help.
9. We didn't finish the work in time, so we had to stay after work.