1. He is looking at the blackboard with his eyes open 1.widely 2.empty 3.thinner 4.handsom

1. He is looking at the blackboard with his eyes open 1.widely 2.empty 3.thinner 4.handsome 5. round (张大地)
2. There is nothing in the box. It’s 6.magazines 7.eyesight 8.humour 9.height 10.special 11.advertisements 12.willing 13.the most famous 14.the hottest 15.smiling 16. farther .(空的)
3. I’m 　 (thin) than you.
4. His brother has two big eyes and looks very h　 .
5. Lily has a 　 (圆的)face with shoulder-length hair.
6. In this bookshop, we can buy many newspapers and m　 .
7. He has bad 　 (视力)because of too much computer work at night.
8. My English teacher has a good sense of 　 (幽默).
9. He is 1.80 meters in h　 (高度).
10. Is today a 　 (特别的) day?
11.What do you think of these 　 (广告) on TV?.
12. I am 　 (will) to teach these children.
13. Yang Zhenning is one of 　 (famous) scientists in China.
14. Which is 　 (hot) season of the year?
15 Laura is a lovely girl with 　 (smile) eyes.
16. Which city is 　 (far) to the sea, Beijing or Tianjin?

解析：1. wide 形容词 宽的 这里需要副词修饰动词 open 2. 空的 empty 3. thin 的比较级 双写尾字母加 er 4.handsome 帅气的 5. round 圆的 6. magazine 杂志 这里需要复数 7. eyesight 视力 8. a sense of humour 幽默感 9. height 高度 high 的名词 10. 特别的 special 11. advertisement 广告 因为前面是these 所以用复数 12.willing 乐意的 be willing to do sth 愿意做某事 13. the most famous 最著名的 14. the hottest 最热的 15. smiling 微笑的 作为形容词修饰 eyes 16.根据句子可知有两个比较对象，所以用比较级 far的比较级是 farther

就是这个解释

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