1.look__this book,it's a history A.on B.at
问题描述：
1.look__this book,it's a history A.on B.at
2.what did they teach him____he church?
A.for B .at
3.when____the spring festival start?
A.do B.did
答
1.A(固定搭配,看某物,没有look on一说)2.B(应翻译为在教堂他们教了什么,for一般接原因或持续的时间段,at接地点)3.B(从后面的动词原形推理,句子不可能是现在时,即后接谓动原形)希望帮到你