This is the only one of the students whose handwriting ____ the best.A.is B.are C.has D.have

问题描述:

This is the only one of the students whose handwriting ____ the best.A.is B.are C.has D.have
答案是不是选b the only of
错了 是不是选A 不是B

这题别被 only one of ...的部分给混淆了,其实看后面...whose handwriting___ the best 也就能确定是 A is 啦.handwriting 也是单数单单只看前面的the only of 能否决定是 is?