We have books in our library.
A. plenty of
B. great many
C. a great deal of
D. great number of
网友回答
(答案→)A. plenty of
B. great many
C. a great deal of
D. great number of
解析：短语辨析。plenty of大量，很多，修饰可数名词； great many 前面缺少冠词；a great deal of大量的，修饰不可数名词； great number of修饰不可数名词。句中books为可数名词复数，故选A。