LEARNING
参考答案
本期II版参考答案
III. At the beginning, the atmosphere was heavy. By the end of the journey, the atmosphere was light and lively.
IV. 1. tired out/tired/exhausted
- 对本期电子报订户、有效期内的VIP教师会员和本学期高三尊享卡用户，我们开放所有内容：
- 如果您拥有以上权限，请点这里登录；
- 订阅电子报，请点这里；
- 激活VIP教师卡，请点这里；
- 激活21英语尊享卡，请点这里。
