Inordertoknowaforeignlanguagethoroughly(彻底地),fourthings...
01-20
问题详情:Inordertoknowaforeignlanguagethoroughly(彻底地),fourthingsarenecessary.Firstly,wemustunderstandthelanguagewhenwehear ______61________ spoken..Secondly,wemustbeabletospeakitcorrectlywithcon...