I won’t pass the exam ______I work hard..

比较划线部分的读音，选出一个与其他三个发音不同的单词.

It is global warming, rather than other factors,_____ the extreme weather.

Tom was thinking about how to explain to the teacher why he was late for class, when a good idea _______him.

While he_____ on the phone, a man walked into his room.