纯纠正原文的这句话前面的1、2A1、2A2阶段剩下的名额 = x (顶尖名校的x可能是0)
x + 预留的40个名额平分给2B和2C (以前没预留的时候，留给2B和2C的可能是单位数，见下图2013年武吉知马区小学的报名情况)
2B阶段如果名额没用完，就留给2C
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2B（义工）阶段的官方定义
Phase 2B
(a) For a child whose parent has joined the primary school as a parent volunteer not later than 1 July of the previous year and has given at least 40 hours of voluntary service to the school by 30 June in the year of registration.
(b) For a child whose parent is a member endorsed by the church/clan directly connected with the primary school
(c) For a child whose parent is endorsed as an active community leader
(a) For a child whose parent has joined the primary school as a parent volunteer not later than 1 July of the previous year and has given at least 40 hours of voluntary service to the school by 30 June in the year of registration.
(b) For a child whose parent is a member endorsed by the church/clan directly connected with the primary school
(c) For a child whose parent is endorsed as an active community leader
Huasing Association 1999 - 2013