英語會話學習

以下句子的英文怎麼說?

1. 不好意思，我沒聽清楚你的名字。
   I'm sorry, I didn't catch your name.
2. 逃避現實 (鴕鳥心態)
   hide one's head in the snad
3. 我必須立刻與他取得聯繫
   I need to get in touch with him immediately.