问题
选择题
The group of the aged are close companions, and many of ______ have known each other for decades.
A．them
B．that
C．whom
D．what
答案
答案：A
考查并列句，因为两句话之间有and，所以是并列句，用them指代companions，句意：这群老年人是亲密的同伴，他们很多已经认识几十年了。选A。