[部优] Unit 1 Please write to me and send me some photos!_第一课时
[部优] Unit 2 We thought somebody was moving about._第一课时
[部优] Unit 2 I believe that the world is what you think it is._第一课时
[部优] Unit 1 I hope that you can join us one day._第一课时
[部优] Unit 2 He was invited to competitions around the world._第二课时
[部优] Unit 2 He was invited to competitions around the world._第一课时
[部优] Unit 2 The Grand Cayon was not just big.