1. I don't usually have breakfast, I go to work.
2. When the door-bell rang, he stood up and went to the door.
3. I am awfully tired. I have never worked so hard in my life.
4. Are you the boy whose dog was making a terrible noise at night? - I'm sorry, but you are mistaken, sir. I have never had a dog.
5. If it don't stop raining we won't be able to go boating tomorrow.
6. What time do the children come out of school, as a rule?