Артикль a an doctor and he works at …hospital which is near our house. 9. don’t forget to lock door when you leave. 10. terry sold his old bicycle so that he could buy …new one

Doctor and he works at a hospital which is near our house. 
9. don’t forget to lock a door when you leave. 10. terry sold his old bicycle so that he could buy a new one.Как-то так.