1 .
1. The car is running at a _________(速度) of eighty kilometers an hour.
2. The teacher is glad that everyone in her class is___________(渴望的) to learn.
3. Jeff has the___________(习惯) of listening to music while reading.
4. Mr. White has been _________(缺席的) from work for days, so he knows nothing about our new plan.
5. He tried to _____(解释), but she wouldn’t listen.
6. The local government is ______(讨论) how to help the poor in the countryside.
7. When things aren’t going well, my parents always _______(鼓励) me, telling me not to give up.
8. Miss Harper closed her eyes and _________(假装) to be asleep.
9. We sat chatting for a few ______(分钟) after finishing our meal.
10. I have been___________(深深地) impressed by a number of experiences in her life.

2 . Only if people of all the countries are united ________(我们才能解决)the existing problems in the world. (solve)（根据汉语提示完成句子）