短文阅读。 Today is Sunday. It's Jack's birthday. Jack is thirteen years old. Jack's friends will come to his house and they will have a party tonight. Jack will have a cake and candles and birthday presents. Jack is very happy. 1. Is today Saturday? ____________________. 2. How old is Jack? ____________________. 3. What will Jack's friends have tonight? ______________________________. 4. What will Jack have? ______________________________. 5. Is Jack happy? ______________________________.