Answer the question (write no less than 5 centences) what is the most important and useful invention: a cd player a telephone a digital camera a tv or a personal computer?

I think that is a telephone. People always use a telephone, it is very important when you need to phone someone. Whether it is an offical conversation or just talk with friends. When we are away from someone, we can phone him. It is easier to speak with somebody, because we can be nervous or worried, so we can only call him. It is very good that we have telephones.