----I,ve just borrowed a CD player ,but Idon,t know _________

题目

----I,ve just borrowed a CD player ,but Idon,t know _________
----you can read the instructions .
A how to use B where to put it ( 我觉得 A好像缺it,但答案选A)

答案

首先it可以省略
然后那人的回答是you can read the instructions
什么时候要看说明?当然是don't know how to use的时候啦!