跟划线单词发音不同的单词是哪个?

问题描述:

跟划线单词发音不同的单词是哪个?
tourist

sure
---
tour
---
sour
---

My father always washes his car on Sunday.
此题出现了一个表示频率的副词 always,.所以应该用一般现在时态.
第三人称单数应用washes.