—Can I help you ?
—I want these nice roses for Lucy’s birthday .
A. two dozen of
B. two dozen
C. two dozen
D. two dozens of
网友回答
(答案→)A. two dozen of
B. two dozen
C. two dozen
D. two dozens of
解析：关键词：these 数词+dozen/score 可直接修饰可数名词，后面的名词前若有后物主代词，介词短语时，中间必须加of