—May I have a dog at home, Mum?—Yes, you can. But you must know how to _________ it.
It’s ten years since he _________ his hometown.
The students shouted with ________ when they heard the ________news.
Fred’s grandfather _______three years ago. He _______for three years.
—Excuse me, does Mr. Chen live here? —He ______ be here, but he has moved to Nanjing.
The roller coaster there moved _______ high speed.