关于肺的描述正确的是（）。

A.位于胸膜腔内，纵隔两侧

B.肺尖达胸廓上口

C.肺纵隔面前部有肺根

D.深吸气时膈面可充满肋膈隐窝

E.肺表面有脏胸膜覆盖

根据句子意思，用括号中所给词的正确形式填空，每空一词。

1. Audrey Hepburn's great ________ (achieve) is to be a humanitarian.

2. Although she is not a beauty, many people find her ________ (attract).

3. She is an _________ (experience) teacher. Her classes are always lively and interesting.

4. We must work __________ (close) with rich countries to improve our environment.

5. Here's a list of the most famous _________ (direct) names.