新概念第二册78课答案讲解是78课课后题详细讲解。O(∩_∩)O谢谢啦

练习答案 Key to written exercises1．关键句型练习答案B 1 I'm making some coffee. Do you want some/any?2 Exports have increased this year.3 My dog is afraid of thunder and lightning.4 The boy was sent t...