Paraphrase the following using the modal verb NEED:

1. I see no reason why we should argue. 2. It was not necessary for her to carry the bags all by herself: there were porters at the station. 3. Is it so very necessary that you should go there at all? 4. There is no use worrying about her; she is quite able to take care of herself. 5. What's the use of reproaching yourself. 6. I don't think there is any need to bother them. 7. It was quite unnecessary for you to do the work instead of him.