You looked unhappy. What’s wrong?—I ________ my PE exam again last week.
Hello, mum. Are you still on Lushan Mountain?-Oh, no. We are back home. We _________ a really good journey.
Paul, stand ________ your feet. [ ]
What do you ________ the people in China? — They are friendly and hardworking.
Many doctors and scientists are working hard on curing AIDS. We hope AIDS _____ one day.