根据句意及词首字母或汉语提示,补全单词。 1. Hainan is in the s_____ of China. 2. —Don't you think English is a very u_____ language? —Yes, I think so. 3. We Chinese r_____ the Great Wall as a symbol of China. 4. —Could you _____ (修理) the bike for me? It's broken. —Of course. I'll do it now. 5. You'll be _____ (瘦的) if you eat less meat.