it was ___ she was about to speak ___ when the bell rang
问题描述：
it was ___ she was about to speak ___ when the bell rang
填which 还是 WHEN
但是选项没有WHOM诶
可以不填
答
这是一个强调句,第一空填when而不是whom,因在这里强调的不是说话的人而是那个时间点.第二个空应该不填吧.
it was when she was about to speak when the bell rang.