单选.It was___that caused him to serve dinner an hour later than usual.
问题描述：
单选.It was___that caused him to serve dinner an hour later than usual.
It was___that caused him to serve dinner an hour later than usual.
A.we being later B.our being late C.we were late D.because we were late
答
正确答案是B.这是强调句型,强调是的主语our being late.这是个动名词的复合结构作主语.
强调句型的判断方式就是把框架it was/is...that去掉后仍能组成完整的句子.所以这句话还原后就是：Our being late caused him to serve dinner an hour later than usual.
其他的选项还原后句子不成立.
because引导状语从句是不可以作主语的.A和C形式不对.
希望你能满意这个解释,祝学习愉快!