1. I will call you __________ I arrive at the airport.

2. She was tired __________ she stayed up late to finish the report.

3.The house __________ was built last year is already sold.

4. I can’t go to the party __________ I finish my homework.

5. They decided to leave early __________ they wanted to avoid the traffic.

6. She is the only person __________ understands my problem.

7. The movie was so interesting __________ I watched it twice.

8. He went to the gym __________ he could stay healthy.

9. We will have a picnic __________ it doesn’t rain.

10. The book __________ she recommended was very helpful.