試卷中有一道完形填空題（其中一段）：

Practicing tolerance will allow everyone to form better relationships with each other. Getting to know someone _____ help you understand why they do things differently from you. It is important to remember that just because something is different does not mean that it is bad. Tolerance teaches us to keep an even temper and open mind.

A.can  B. may

答案給的是may，個人覺得can更好，請問老師：

1）這題到底選哪個更說得通呢？區別在哪？（是不是答案錯了？）

2）試卷中的：It is important to remember that just because something is different does not mean that it is bad.（劃線部分在句中做什么成分？because一般只引導狀語從句的不是嗎？是句子有誤嗎？）