Today, after more than 50 years of development, the College of Europe has not only served as ______ important think tank for the European Union but also become_____cradle of political elites of Europe.
__ he is young, he knows a lot.
I used to use English a lot and spent an hour each day _____ English books in the library.
___ the first day, at the meeting, I sat next ____ a girl named Diana.
It is in the big factory ______________my father works.
If you have no idea about how to pronounce the word correctly, you may____ the dictionary.