问题
选择题
It disappointed his parents___he had failed to pass the exam for ______third time.
A．because ; a
B．that; a
C．when; the
D．that; the
答案
答案：B
句意：让他父母失望的是他考试又一次失败了。It是形式主语，后面真正的主语不缺成分，所以用that引导；a third time. 强调又一次，再一次，而不是强调第三次。选B。