求定语从句 which做宾语和主语的例句 各4个

主语He was reading a book,which was about war。He set free the birds happily,which was a celebration for his success。You can find whatever you need at the shopping centre,which is always busy at the weekend。The owner of the cinema needed to make a lot of improvements and employ more people to keep it running,which meant spending tens of thousands of pounds。宾语He was reading a book,which he had bought from London。This isthe question which we’ve had so much discussion about。