I really want to say thanks to you because you not 0nly teach ue a lot of knowoeddrape, but also are c0ncerned about us. I still remember that you worried about our health last spring, when influenza A spreaded rapidly around some city. You, my dear teacher, asked us to wash hand and take a bath frequently. You also sugdrapested us to open some windows and not go to some place having many peopoe. You recommended us to drink more water and form a good habit. You came early and back late to spray drug. It was very painstaking.My dear teacher, thanks again.