________ should know health is very important. To keep ________, we need to know what is bad for our health.

First, if we don’t ________ well, we will fall ill easily. ________ we should sleep at least eight ________ every night. ________, we shouldn’t eat lots of fried (油炸的) foods or chocolate, ________ they have much fat (脂肪). Third, we should eat sweet foods such as cakes, ________ and ice creams in a good way. In some western ________, people like eating sweet foods, so they usually have ________ problems. That’s why dentists are so popular there. Fourth, ________ is good for us, but we shouldn’t walk or run more than we need. If we walk ________ than 15,000 steps (步) every day, you will ________ your feet and legs badly. Finally, don’t try dangerous sports if you have ________ problems. Every year, many people die of (死于) dangerous sports. Heart problems are usually the ________ reason (原因) for their death.

Will you remember all of them?

It’s never easy to admit（承认）you are in the wrong. We all _______ to know the art of apology（道歉）. Think how often you’ve done wrong. Then count how many _______ you’ve expressed clearly you were _______. You can’t go to bed with an easy mind if you do _______ about it.

A doctor friend, Mr. Lieb, told me about a man who came to him with different kinds of signs: headaches, heart trouble and insomnia（失眠症）. _______ some careful exams, Mr. Lieb found nothing wrong with him and said, “If you don’t tell me what’s _______ you, I can’t help you.”

The man admitted he was cheating（骗取）his brother of his inheritance（遗产）. Then and there the clever doctor _______ the man write to his brother and _______ his money. As soon as the letter was put into the post box, the man suddenly cried.“Thank you,” he said to the doctor, “I think I’ve got well.”

An apology can not only save a broken relationship（关系）, but also make it _______. If you can think of someone who should be ________ an apology from you, do something about in right now.

Everyone likes living in a clean and ________ environment (环境). If the environment are bad, it will affect (影响) our body, and make us not feel well. Sometimes we may be ________ ill. Just like what we ________ with COVID-19. At that time we don’t want to work, and we have to stay in bed and rest at home.

They are germs (细菌) and virus (病毒) that make us ill. They are ________. Even if you sneeze (打喷嚏), there are countless germs and virus. They are very small and you can’t find them with your ________ eyes, but you can see them with a microscope (显微镜). They are very small and there may be ________ them on a very small thing. Germs and virus can always ________ in dirty water. When we look at dirty water under the microscope, we shall see them in it ________. Germs and virus can also be found in air and dust (灰尘). If you cut your finger, some of the dust from the floor may go into it, and you will have much pain in it.

We know COVID-19 has brought great disaster (灾难) to ________. I want to say to you “Come on, we have a way to deal with them. We will win, ________ the first thing you must do is to wear your masks. This is the best protection (保护) against COVID-19.”