— What are you going to do ______you see an old man lying on the road?— I am sure to give him a hand.
— Do you know this computer? — Yes. Last Monday.
English by many people around the world today.
Tu Youyou is a Chinese scientist. She medicine since 1951.
Liu Yang is excited. He to Tian’anmen Square tomorrow morning.
— Must I wash my skirt tonight? — No, you . You can wash it tomorrow.