----Look at the boy running on the playground. Is it David?---- It ______ be him. I saw him go to the teachers’ office just now.
Everyone knows fire is very useful in our daily life, it is also dangerous.
Tom’s parents were too angry to say a moment ago.
Jenny is the first on the list of the famous stars because she was the richest them.
Lucy often plays guitar after she has supper.
Which of the following underlined parts is different in pronunciation with others?