问题补充:
The foreigners have been in Beijing for three years, so they are familiar the city .
A. to
B. with
C. for
D. On
答案:
A. to
(答案→)B. with
C. for
D. On
解析:句意:那些外国人在北京呆了有三年了,所以他们对这个城市很熟悉,be familiar with sth意为“某人对什么熟悉”,而be familiar to后面常跟人,意为“某物为某人所熟悉、知晓”;故选B。