I just can't understand ____

I just can't understand ____ I can't understand ____ at that poor child. i understand most od you said ,but i can't understand ____ I can't understand what I think on earth,I just know I am sa i can't understand no i can't understand这是哪首歌? I can't understand _____. I can’t understand ________. ——I just can't understand why Jack isn't here for my birthth 情态动词用法I just can't understand that you ( ) think I knew some I Just Don T Understand 歌词 I just don't understand是什么意思 是I can't understand 还是I don't understand?