用所给单词的适当形式填空．
To our joy，Tu Youyou，a Chinese woman scientist，won the Nobel Prize in her （eighty）．
With the spread of COVID﹣19 around the world， staying in China is much s than in many other countries．
Would you like some milk or coffee？
N ． I'd like a glass of water．
There are nineteen people waiting for the dentist in front of me． I'm the t ．
Hello! May I speak to Jeff？
Sorry， he is not at home． But I can take a m for you．
Alice always b her teeth after meals to have good teeth．