根据所给字母补全句子。 1. There is a big lake and a lot of interesting p in the Summer Palace. 2. Nanjing is the c city of Jiangsu Province. 3. We are going to t a plane to Sanya. 4. They can go to the City Library on f . 5. We are going to s there for a few days. 6. Look at the m of China.