Even though Sara had practiced her speech repeatedly,she_its conclusion at the talk show
问题描述：
Even though Sara had practiced her speech repeatedly,she_its conclusion at the talk show
为什么空格处填forgot?
答
你的疑问是什么呢?
填forgot完全符合语法语义.
译：尽管莎拉已经反复练习了她的演讲,在脱口秀时她还是忘记了演讲的结语.------语意上符合.
从句Even though Sara had practiced her speech repeatedly,用过去完成时,表示“在脱口秀前已经”；而主句she_its conclusion at the talk show用一般过去时,表示“脱口秀当时”的情况.------语法上符合.可为啥不能用has forgot呢？at the talk show（在脱口秀时）指某一特定的、明确的过去时间，要用一般过去时；而不能用现在完成时。