1. Tom was so busy. He couldn't join us. (though/as a result)

2. He made so many mistakes. The boss didn't dismiss him. (because/though)

3. Peter missed the bus. He was late for the meeting. (although/as a result)

4. The exercises are not easy. He can finish all of them on time. (although/because)

5. The man was arrested. He took some money from the shop. (though/because)

6. My friends didn't do homework. The teacher punished him. (as a result/though)

7. John came to class late. The teacher let him come in. (because/ though)

8. I don't understand what he says. I ask him to repeat. (because/ though)

9. His mother cooked well. He ate all food on the table. (although/as a result)