— I didn’t care about what other people thought about me.— Well, you ________.

— May I smoke here?— No, you ______ . This is a no-smoking room.

It is beyond my understanding that many adults ________ be so crazy about Harry Potter series.

It was playing video games that took the boy too much time that he          have spent learning．

My cell-phone  has disappeared. Who       have taken it away?