1.What was it that distinguished her from her classmates?
2.We must always bear in mind that China is a big country with a huge population.
3.The exhibition was organized by the school in association (associate) with local artists.
4.When you come to school, please visit my office at your convenience (convenient).
5.The service offers young people practical (practice) advice on finding a job.
6.Whether or not the secretary will be fired is at the mercy (merciful) of her boss.
7.I believe that you are innocent (innocence), and I'll stand up for you anywhere.
8.We all have an expectation (expect) that he can pass the driving test next week.
9.I have filled in the form and filed (file) my patent application with the Patent Office.
10.In my opinion, only by facing difficulties bravely and seizing (seize) opportunities can one succeed.