Rewrite the sentences.按要求改写下列句子。
1. It’s cloudy today. (对划线部分提问)
________ is the ________ today?
2. Peter lives in Beijing. (改为否定句)
Peter ________________ in Beijing.
3. We have some old friends. (改为单数句)
I have ________ old ________.
4. I like skiing in winter. (改为一般疑问句)
________ you ________ skiing in winter?
5. How is the weather in summer in Shanghai? (根据实际情况回答)
______________________________________