答案是(A):I had a big fight with my best friend.And it's difficult for me to (get over it).不要从语法去看.两句都是成语.Get over it!得了吧!（或忘了吧!）Get it over with!还是把它（不愉快的事）做完吧!例...“Get it over with!还是把它（不愉快的事）做完吧！”是不是get it over后面一定是跟with？还是也可以不加？with后面又要加什么？是的，四个单词次序不可改。整个成语是 get it over with。Get it over with 的意思是 be done with it 。get it over with 后面不加什么，可以作主句或从句用。