I really didn't know it, ___ I came there without thinking
A.and B.but C.or D.so

完形填空里的,是“我”走在路上突然想起要买袜子于是来到了一个袜子的商店里,店员跟我说“Do you know you are in the finest place in the world to buy socks? ”然后就是这句了求解