1. I felt a great sense of ________ when I reached the top of the mountain.(achievement).
2. Since then, they have launched a great_______ to make the beaches safer for swimmers and tourists.(运动)
3. Instead of _________ (refer) to the dictionary, I always try to guess the meaning of the words in the passage.
4. The event is _______ of being remembered. (worth)
5. I observed one strange man _______ (stare) at me when I entered the room.
6. It is nice _____ you to rescue me from the fire
7. It is necessary ______us to refer to the dictionary in English study.
8. Only then _____ he realize that he was surrounded by the police.
9. ______ old in our village are now living _____ much more comfortable life than in the past.（冠词填空）
