. —Haven’t I told you that I like the beef well-done?—Yes, but I _______ it longer than I usually do.
27. I wonder whether the police ______ that lost child or not
26. Jerry, why ______ you leave your things on the floor like this?
25. When Jack reached the station the train ______ for ten minutes.
24. After ______ seemed a long time, Mr. Li stood up and broke the silence.
23. Allow others the space to voice their opinions, ______ they are different from yours.