許老師,您好!請問,He was the only person _______ passed the exam.除了用

題目：

許老師,您好!請問,He was the only person _______ passed the exam.除了用that,還可以用who嗎?

解答：

不能,前面有 the only 修飾時,後面只能用that.
你這麼問,這位許老師能看到的機率不高.