二.英语介词填空:（按课本课文内容填入适当的介词）
二.介词填空:（按课本课文内容填入适当的介词）
11.Successful language learners are learners _____ a purpose.
12.Successful language learners are independent learners.They do not depend _____ the book or the teacher.
13.It is just like a 24-hour library,which enables us to search ____ the right information we need by simply typing in some key words.
14.It is necessary for them to learn the language in order to communicate ____ these people and to learn from them.
15.____ the other hand,if your language learning has been less than successful,you might do well to try some of the techniques outlined above.