从方框中选出合适的内容,完成句子或对话。 useful can’t blind show hear 1. A: What’s wrong with the old man? B: He is ______. He can’t see. His dog always helps him. 2. I’m very ______ at home. I can help Mum do the housework. 3. A: There is a ______ about pandas on TV every day. B: Yes. I like it a lot. 4. A: What’s the matter with Sam? B: He hurt his feet yesterday. So he ______ walk fast. 5. My grandma is old, but she is not deaf. She can ______.