1. (2021高一上·惠阳期中) 阅读下面小短文，根据上下文语境，选择合适的单词填入空白处，每个单词只使用一次，每个方框里有一个是多余的词。

recommended  quit   challenge  preferred confident improve

 

As I was interested in the Inca Empire, my adviser  I read some books about the Inca civilization. It was such a big for me to read these books at first that I really wanted to .Luckily, my adviser encouraged me and help me   my reading ability. Finally, I became more  in learning history.