1. Mary helped me with my homework. Mary was very tired (although)
2. You work too fast. Perhaps that's why you make somany mistakes.(if)
3. Take plenty of food. You may be hungry on the long trip.(case)
4. Is that the new restaurant? I will meet you at that restaurant tomorrow.(where)
5. Seven o'clock is the time. My plan arrives then.(when)
6. My brother isn't good at drawing. I'm not good at drawing.(neither)
7. They couldn't drive fast. The road was slippery.(so)
8. The church is 200 years old. The pagoda is 300 years. (older)
9. The water is highly polluted. We cannot swim in this part of the river.(because)
10. A man answered the phone. He told me you were away. (who)