英語會話學習

以下句子的英文怎麼說?

1. 如果我不做呢？
   What if I don't wanna do that?
2. 別那樣看著我。
   Don't look at me like that.
3. (進電梯時發生超重嗶嗶聲時) 對不起，我出去
   Sorry, I'll get out.