问题
选择题
—She was late for the party.
—That’s _________she had forgotten the exact time.
A．why
B．how
C．because
D．whether
答案
C
题目分析：考查表语从句：句意：--她聚会迟到了。--这是因为她忘了确切的时间。That is because…那就是因为…，because引导的是表语从句，that is why…那就是…的原因， how怎样，whether是否，不符合句意，选C。