— Is that your best friend Simon?---No, it ______be him. He flew to Hong Kong yesterday.
He’s gone to the library, ________he?
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.