（朗文外研社）新概念英语第二册第3单元和第4单元答案
问题描述：
（朗文外研社）新概念英语第二册第3单元和第4单元答案
开始学每个单元之前那个测试题的答案...
答案要完整.
答
Key to Pre-unit Test 3 Key structures A 1.He read the book and returned it to the library.2.The boy climbed the tree and picked some apples.3.I opened the door and he came into the hall.4.He looked fo...