1、We are sparing no efforts to create ____ more peaceful and more advanced world,____ place
where everyone enjoys his life and freedom.这里两个空为什么都填a 第二个不应该是后有修饰的特指吗
2、What i need is ____ book that contains ____ABC of oil painting
这里第一个空为什么是a book后面不是有修饰是特指吗
He was such a speaker that he held our attention every minute of___ three-hour lecture
数字与名词连字符连接不是前面要用不定冠词吗 为什么这里填the？