选词填空。 A. are B. party C. chairs D. mother’s E. birthday A. are B. party C. chairs D. mother’s E. birthday 1. I’m ready for a birthday ________ . 2. Today is my _________ birthday. 3. There are 13 _______ in the classroom. 4. I buy a _________ cake for my mum. 5. Here you _______.