Unit 1 Welcome back to schoolA Let’s talk一、 根据图片选择句子,将序号填在横线上。 ______ _____ ______ ______ ______1. I’m Mike. I’m from Canada.2. I’m Wu Binbin. I’m from China.3. We have two new friends today.4. I’m Amy. I’m from the UK.5. Hi, I’m Sarah. I’m from the USA. 二...