问题
选择题
It was _____ that caused him to serve dinner an hour later than usual.
A．we being late
B．our being late
C．we were too late
D．because we were late
答案
答案：B
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It was _____ that caused him to serve dinner an hour later than usual.
A．we being late
B．our being late
C．we were too late
D．because we were late
答案：B