A good memory is a great help in （ ）a language括号里应该填哪个?求理由A.learn B.learning C.learns D.being learning还有,learn a language和learning a language有什么区别?求讲解
问题描述：
A good memory is a great help in （ ）a language括号里应该填哪个?求理由
A.learn B.learning C.learns D.being learning
还有,learn a language和learning a language有什么区别?求讲解
答