词汇运用
根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。
1. A shark is a dangerous (动物) that lives in the sea.
2. Lin Shuhao did a good job in the basketball match last month. He is my favorite (明星).
3. John is (幸运的) enough to be chosen for the swimming club.
4. It has been the (第十) day since we climbed the Great Wall.
5. He borrowed my iPhone 4s and hasn’t (归还) it to me.