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?

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?
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?

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?
have sb do something
固定用法

have sb. do sth, "让某人做某事“

have sb.DO sth.
此处，不带TO 的不定式作宾补，由HAVE 的句型决定

这句话的意思是：主管（导演）让她的助手给工作人员一些热狗。have sb do sth 所以选C