We’ve tested three hundred types of boot, ____ completely waterp

We’ve tested three hundred types of boot, ____ completely waterproof.
A、no of which
B、none of which
C、some of that
D、neither of which
【正确答案】：B
【题目解析】：我们已经测试了三百种靴子了，没有一种是完全防水的。这里空格后是is，单数形式，前面要用否定形式，no of which是错误的，neither是两者选一，只有B正确。