Can I say,<br/><br/>(a) After he had done all the work, he felt tired. His parents were proud of<u><b> Peter for being a helpful and hardworking boy</b></u><b>.</b><br/><br/><br/><br/>(b) His parents <u><b>praised Peter as a good</b></u> boy.<br/><br/><br/><br/>(c) Peter felt<u><b> proud for being helpful</b></u>.<br/><br/><br/>