单项选择题
Mary is a clerk（）a job in a top bookstore.
A.in B.with C.to D.for
单项选择题 Three people,（）, were injured in the accident.
单项选择题 Let me（）the case carefully before I draw a conclusion.
单项选择题 --Are you free in July? --No, I（）with my parents in July.
