— Why did the dinner party start so late last night?
— It was _____ that caused him to serve dinner an hour later than usual.
A. we were late B. we being late C. our being late D. because we were late
— Why did the dinner party start so late last night?
— It was _____ that caused him to serve dinner an hour later than usual.
A. we were late B. we being late C. our being late D. because we were late
C
本题考查强调句的一般用法，强调部分在句中作主语，该句中主语由动名词的复合结构充当。