.  Your mouth will be opened and your teeth will be shown when you laugh. However, the h____(1)_____ those teeth are, the happier you look. Strong, healthy teeth can help you eat the right food to help you g_____(2)______. They also help you speak clearly. But do you know how to take care of your teeth? These should be f_______(3)______.
Brush your teeth twice a day after breakfast and before bedtime. If you can, brush after lunch or after eating sweet cakes. T____(4)_____ your time while brushing. Spend at least 3 minutes each time you brush. Brush all of your teeth, not just the f____(5)_____ ones. Spend some time on the teeth along the s_____(6)______ and in the back.  
Be sure the t____(7)_____ you use is soft and should be changed every three months or even less.
Learn how to floss(用牙线清理) your teeth, which is a very important way to keep them healthy. It feels s when you do it at first, but soon you’ll get used to doing it. The floss cleans up food that’s h____(8)_____ between your teeth.
Brushing and flossing keep your teeth healthy. You also need to c______(9)______ about what you eat and drink. Eat lots of fruits and vegetables and drink water i____(10)____ of drinks.

根据短文内容及首字母提示，填写所缺单词，并将答案填写在相应位置上。

Chuck Wall teaches management and human relations at Bakersfield College. He walked into class one day and told his students that their h   1.    was to perform one act of random(任意的) kindness. His students did not understand the assignment(任务), but the professor would not answer their questions. He e   2.   his students to find it out for themselves.

One week later, the students entered the classroom excited to s   3.  their stories. One student told of distributing blankets to the homeless, another had contacted a long, lost friend, and another student r  4.   that he had helped a dog to find its owner. Students were energized(激励) by the homework assignment and wanted other people to be kind too. W  5. the support of local businesses, the students made stickers to put on cars that invited people to do something k 6. for others. They sold the stickers and decided to donate the money to a center for the blind –not surprising as Professor Wall is blind.

Since then, s  7.  kindness activities have been organized in schools all over the world. Many schools organize a Random Acts of Kindness Week, a  8.  November 13, to celebrate World Kindness Day. Some schools use each day of Random Acts of Kindness Week to perform d 9. kind acts, such as making a new friend, helping someone, doing community service, or raising money for a charity. Students learn to c  10.  other people and think about how small actions can make the world a better place.

根据句意，用括号内所给词的适当形式填空。

1.After so many ________ (year) practice, Li Na is a well-known tennis player.

2.We’ll have a surprise party for my mother’s ________ (forty) birthday next Saturday.

3.The higher the mountain is, the ________ (thin) the air is.

4.To tell the ________ (true), I don’t like the drinks in that café.

5.It’s a (an) ________ (usual) experience, few people have chances to do it.