问题补充：
He knows English but he has English friends.
A. few; little
B. little; few
C. little; a few
D. a few; little
答案：
A. few; little
B. little; few
(答案→)C. little; a few
D. a few; little
解析：本题的含义为他英语知道的很少，但是他有几个英国的朋友，修饰不可数名词英语表示很少，几乎没有可用单词little，修饰可数名词朋友表示有几个可用a few，故本题选C。
