The more one is the English－speaking environment，the better he or she will learn the language.
A. exposed to
B. filled in
C. caught on
D. kept up
网友回答
(答案→)A. exposed to
B. filled in
C. caught on
D. kept up
解析：考察固定搭配。固定搭配be exposed to…暴露在…；接触….；句义：一个人接触英语越多，他/她就将把英语学得更好。本句中的be exposed to…是由expose…to…转换而来。故A正确。