Sometimes the boy is a bad-tempered child, but he ____ be quite lovely when he wishes．

——Must I come to see you again?——No, you _________.

 I ________ have watched that movie---it will give me horrible dreams.

John, look at the time._____ you play the piano at such a late hour?

– Look at the lady there. ______ it be Miss Li? -- No, it ______ be her. She left for Paris this morning.