按要求改写下列句子。 1. My cousin is in the third grade this year. (改为同义句) My cousin is in _____ _____ this year. 2. He is back form Qingdao. (改为同义句) He _____ _____ form Qingdao. 3. He is five years old. I am five years old, too. (改为同义句) He is five years old._____ _____ _____. 4. School begins at 8:30. (改为一般疑问句) _____ school _____ at 8:30. 5. My friend will come to see me this evening. (改为否定句) My friend _____ come to see me this evening.