To my surprise,the old man _masters___ five foreign languages.

题目

To my surprise,the old man _masters___ five foreign languages.
2.Our parents all _expect___ we can become helpful people to the society in the future.
3.The _introduction___ of the new learning method is very helpful.We can learn a lot from it.   说明为什么填这个答案  这题有什么知识点  易错点  谢谢
每个单词意思是1.掌握 2.期盼 3.介绍

答案

master 掌握的意思,前面的the old man这个老人,所以是单数,三单形式在动词后面加s
except期望,因为前面的our parents我们的父母是复数所以用原型
the···of固定结构中间的省略号加名词,所以介绍的名词形式introduction