单项选择题
I find the lecture I attended in the Nanjing Normal University yesterday difficult().
A.understandB.being understoodC.understoodD.to understand
单项选择题 ()wants to stay in a hotel has to pay their own way.
单项选择题 The book()forty maps,()three of Great Britain.
单项选择题 I began to feel()in the new school when I saw some familiar faces.