The more one is the English-speaking environment, the better he or she will learn the language.
A. filled in
B. exposed to
C. caught on
D. kept up
网友回答
A. filled in
(答案→)B. exposed to
C. caught on
D. kept up
解析：句意，一个人越多的暴露于说英语的环境中，他就会越好的学好这门语言。fill in填写expose to暴露于 catch on 投合心意keep up保持，故选B，最符合题意。