问题补充：
She has friends. She always plays by herself.
A. few
B. a few
C. little
D. a little
答案：
(答案→)A. few
B. a few
C. little
D. a little
解析：few很少，表示否定含义，修饰可数名词复数；a few几个，表达肯定含义，修饰可数名词复数；little很少，表达否定含义，修饰不可数名词；a little一点，表达肯定含义，修饰不可数名词。根据下文,她总是独自玩.可知前文指的是,她的朋友很少.故选A.
