Use the words in brackets to combine the following sentences.
1. All the students love the principal. He is very kind. ( because of )
2. I have forgotten the tickets. I'm sorry for it. ( having )
3. I saw it with my own eyes. I believed it. (if )
4. The house at the end of street has been sold. It has been empty for years. ( which )
5. It's a pity he doesn't take the doctor's advice. (wish)
1. All the students love the principal because of his kindness.
2. I'm sorry for having the tickets forgotten.
3. I will believe if I saw it with my own eyes.
4. The house at the end of the street which has been empty for years has been sold.
5. He wish he had taken the doctor's advice.
