—What is ___________ distance between Beijing University and Qin

—What is ___________ distance between Beijing University and Qing Hua University?—Sorry, I don’t know it exactly, but the two universities are within __________ easy distance.
A、the;不填
B、the;an
C、不填;an
D、不填;不填
【正确答案】：A
【题目解析】：the表示特指，the distance 特指北京大学和清华大学地距离，easy distance意为”距离很近“。