----How did you sleep last night?-----Not very well. I ________ too late preparing a report for the meeting.
55. I can’t see John anywhere. Where _____ he have gone?
54. Extensive tests have been on the patient.
53. She_______most of the prizes for swimming.
52. Don’t worry. Your child is old enough to___________himself.
51. --- There were already five people in the car but they managed to take me as well. --- It _____ a comfortable journey.