单项选择题
Senior members of the staff competed eagerly（）the position of sales manager in the company.
A.in B.with C.for D.on
单项选择题 If you want to find a decent location for your own home,（）Mr. Smith for advice.
单项选择题 After so many days without rain, the ground quickly（）the little rain that fell last night.
单项选择题 Human behavior is mostly a product of learning（）the behavior of animals depends mainly on instinct.
