用所给词的适当形式填空。
1. We are very________(surprise)at the news.
2. Several_________(foreign) visited our school yesterday.
3. Doctors often tell us________(drink)more water every day.
4. The boss left his office________(angry)without saying a word.
5. We will have the meeting on the________(twelve)floor.
1. surprised 2. foreigners 3. to drink 4. angrily 5. twelfth