Morethananythingelse,athoroughanddetailedplanisneededthisyear'ssalesgoals.AtoachieveBachievementCforachievingDachieving我是凭感觉选对的,但是看了答案解析,我晕了,解释是这么说的：和need同类的及物动

Question

More than anything else,a thorough and detailed plan is needed____this year's sales goals.
A to achieve
B achievement
C for achieving
D achieving
我是凭感觉选对的,但是看了答案解析,我晕了,解释是这么说的：和need同类的及物动词,当变成被动语态时后面不需要加任何东西.因此,做状语的A选项是正确答案.
1.need doing sth=need to be done，这个不是被动吗？那 be needed to 这个怎么也是被动？
2.麻烦分析一下句子结构

Answer 1

结构是a plan is needed to achieve sth.
当然这是被动,主动是we need a plan to achieve sth.
这里的结构是need sth(the plan) to do sth,没有need doing sth