Unit 1 Hello!A Listen and judge录音文字稿:1. Good afternoon. 2. Hi. 3. Good morning. 4. Hello.参考答案:B Listen and number录音文字稿:1. Good morning, Bobby. 2. Good afternoon, Sam.3. —Hello, Bobby.—Hello, Sam.参考答案:a. 3 b. 2 c. 1C Look and respond参考答案:1. Good morning. 2. Hi./Hello. 3. Hello./Hi. 4. Good a |