The director had her assistant ________ some hot dogs for the staff members.A.picked up B.picks up C

题目

The director had her assistant ________ some hot dogs for the staff members.A.picked up B.picks up C.pick up D.picking up 这题为何选C而不选B呢?有谁可以给我讲讲吗?

答案

have sb do something
固定用法