— The flu is becoming terrible these days.—So we ____ go to crowded places.A. must B. should C. shouldn’t
Ben is one of ________ students in our class. He keeps doing sports every day.
Mr. Wang _______ dinner with his family now. They look very happy.
I knocked on the door but ________ answered.
— ________ did you put my glasses just now, Bill? —On the desk.
Tom was ill yesterday, ________ he didn’t go to school. But he’s better now.