（）use lunch

选出下列单词中字母“u”发音不同的一项（）

Don't be （) to ask a lot of questions. Be （) to everyone you meet. Use your lunch
Don't be () to ask a lot of questions. Be () to everyone you meet. Use your lunch hours to get to know your () and their interests. Pay attention to the () , but don't join them. Don't () about your boss, any co-workers, or the job you did before. Keep a()attitude and an open mind.

请帮忙给出正确答案和分析，谢谢！

划线部分读音相同teach lunch（）

He finished his lunch very fast, because he used to attend an important meeting.()

He finished his lunch very fast, because he needed attend an important meeting.()

In M&A deals most Buyers do not use an investment bank.大多数买家不使用投资银行。（)

Instagram, understood by young people, all the young people use Instagram in U.N., mainly aged 18－29 years old, of which men use Instagram more time than women。（)

app的use方法可以调用一个函数（中间件），这个函数会在请求和响应之后被调用（）