Doing lots of listening practice is one of the s_______ of becoming a good language l_______.
问题描述：
Doing lots of listening practice is one of the s_______ of becoming a good language l_______.
答
solutions
listener
答
中第二个of为何这里用它？ lots of 许多 one of ．．．之一 the secrets of ．．．的秘密 of表示“．．．的” the secrets of ．．．
答
solutions
learner