Have you ever been ill When there is illness, there can be no happiness. When you are ill, you are (41) , for your body becomes hot, and there are pains all over your body. You don’t want to work. You stay in (42) , and are very sad. What makes us ill Germs are (43) . They are very small. You can’t (44) them with your eyes but you can see them with a microscope(显微镜). They are very, very (45) There could be (46) of them on a very small thing. Germs aren’t found only in water. They are found in air and dust (灰尘), too. If you cut your finger, and if some of the dust from the floor goes (47) the cut, some of the germs will go into your (48) . Your finger will become big and (49) , and you will have (50) pain in it. Sometimes the germs can go all over your body, and you will have pain everywhere.

A. bed
B. table
C. home