根据短文内容补全句子，每空一词。 Hello, I'm Tom. I'm 12 years old. I am from the USA. I have a twin brother. He is Tim. He likes sports very much. He is not happy today. Because his leg hurts. He can't have P. E. class. He can't play football with his classmates. Football is his favourite sport. He has to stay in the classroom. The doctor said he can have the P. E. class next week. 1. Tom and Tim are __________ years old. 2. Tim is Tom's twin ___________. 3. Tim's not __________ today because his leg hurts. 4. Tim's favourite sport is __________. 5. Tim can have P. E. class next __________.