1. (2017·阜康) 根据句子中所给的单词首字母或中文提示，填写正确的单词．

1. （1） Our teacher has lots of ein teaching．So he often makes his class active．
3. （2） Don't speak loudly in p．It's impolite．
5. （3） The weather was terrible，but the bus they took arrived s at last．
7. （4） To his s，his father agreed with him to watch the football match together．
9. （5） My father isn't tall or short．He's of medium h．
11. （6） He has a special（能力）to write with two hands at the same time．
13. （7） I'm（骄傲）to help people see again．
15. （8） The old man lives（独自）．So he feels lonely．Let's go to visit him．
17. （9） At my first art show，a famous professor praised me and（鼓励）me to keep trying and make more wonderful pictures．
19. （10） Students are encouraged to discuss（自由地） about what they think．