— You keep on coughing. What's the matter? — Oh, I've got a cold. Nothing serious, ____.
It is demanded that you ____ at six.
At present,there is little doubt ________ short message plays an increasingly important role in our lives.
— Are you a teacher? — No, but I ______. I worked in a middle school for three years.
— Is your mother going to the supermarket? — No,______.
______,I will help you with your work.