1. (2017八下·句容期中) 根据句子意思，用括号中所给汉语提示或英语单词的适当形式填空，写出空缺处所填单词的正确形式。

1. （1） They were willing to risk their jobs.(lose)
3. （2） He was patient enough to spend a lot of time things to us.(explain)
5. （3） British people often behave when waiting in public places.(polite)
7. （4） Look at the sign. It says "No ".(litter)
9. （5） Do you have problems your dream?(achieve)
11. （6） Let's have a on this school trip plan.(讨论)
13. （7） The manners in the UK aren't to those in the USA.(类似的)
15. （8） I hope our fashion show will be .(成功)
17. （9） He me to help him with his English because he was very poor at it.(期待)
19. （10） We must prevent the of this kind of disease.(蔓延)