40.Halloween, the children came to Mrs.Harris' house,_____in strange costumes.

71.As you are so concerned about the issue, you should make your views_____to other committee members.

70.Gilbert often attends online public lectures_____his horizons.

69.When the police broke into the house, they found the old man_____dead on the floor.

68.After_____by the doctor, you are required to turn in the examination form.

67.My roommate didn't meet the deadline. I regretted_____.

66.The Clarks haven't decided yet which hotel_____.

65.The opportunity_____in a prestigious corporation is a dream for the graduates nowadays.

64._____the news, everyone was very_____.

63._____a doctor in a hospital, one must have at least a master's degree.

62.The singer is reporteda concert in Hong Kong next week.