I have a difficult time k___ what you were doing when I called you.空里面填什么,为什么这么填.
问题描述:
I have a difficult time k___ what you were doing when I called you.空里面填什么,为什么这么填.
答
I have a difficult time k___ what you were doing when I called you.空里面填什么,为什么这么填.