he has sent requests for spare parts.he has __spare parts.

问题描述:

he has sent requests for spare parts.he has __spare parts.
(asked/asked for /begged /pleased)分别什么意思?
为什么?

选asked for
ask vi.询问,问,要求 vt.问,要求,需要,邀请
ask for v.请求,寻找
beg v.请求,乞求
please vt.请 v.使喜欢,中...的意,使满足,取悦