We are tired of doing homework every day; most of is of no use but of
mechanical drill.
A. a lot of; it
B. the number of; which
C. a number of; it
D. a great deal of; which
网友回答
(答案→)A. a lot of; it
B. the number of; which
C. a number of; it
D. a great deal of; which
解析：本题考查修饰不可数名词的形容词短语，homework是不可数名词所以排除BC；句中分号说明第二句不是定语从句，用it 代替homework。