She stood leaning ______the blackboard ,with a book in her hand .

问题描述:

She stood leaning ______the blackboard ,with a book in her hand .
A on
B upon
C aganist
D in

选C
lean against 是一个词组,意思是 斜靠着
这句话意思是 她站着,斜靠着黑板,手里拿着一本书.