When you are ill , you must be unhappy because your body becomes hot , and there are pains ( 疼痛 ) allover.Youdon't want to work ; you stay in bed , feeling terrible. What makes you ill ? It is germs ( 细菌 ) . Germs are everywhere.Theyare very small and you can't find them with your eyes , but you can see them with a microscope.Theyare very small and there could be hundreds of them on or in a very small thing. Germs are always found in dirty water.Whenyou look at dirty water under the microscope , you will see them in it.So your parents will not let you drink dirty water. Germs are found not only in water.Theyare also found in air and dust ( 灰尘 ) . If you cut your finger ( 手指 ) , and if some of the dust goes into the finger , it will become big and red , and you will have much pain in it.Sometimesgerms will go into your body and you will have pain everywhere. 1.The writer thinks that you will ________ when you are ill.