Are theses connectors right here? .As/ Since/ Because...I got late , I had to take a taxi. My parents never like my friends .independently(?).who they are Tress produce oxygen. Also, they provide habitat for animals. He wasn't competent , ...so,. He lost his job. Factories pollute the air so government must oblige .... I think commas are important but I am not sure which must use commas and which cannot Thank you very much