问题补充：
Surely the day you are informed of your being admitted to a famous key university will be of joy and celebration for your family, relatives and friends.
A. that
B. the one
C. one
D. those
答案：
A. that
B. the one
(答案→)C. one
D. those
解析：考查代词：句意：当然你被告知被著名的大学录取的日子将会是你家人，亲戚，朋友高兴庆祝的一个日子。这里需要一个代词指代one day，one可以泛指可数名词单数，that是特指前面的可数名词单数或不可数名词，those是特指前面的可数名词复数，选C。
