71. The family had to move to a much smaller house in order to manage __________（以减轻经济负担）.
72. At that moment, the door __________ open（门开了）, and Roy walked in.
73. It was here that I discovered that I was__________ (过敏的) to the tiny flies which bit me and made my face swell.
74. It was a great __________（荣幸）to hear her sing.
75. He was a very __________ (体贴的) boy for someone so young.
76. Her evidence suggests a different __________ (解释)of the events.
77. At the i__________（休息，间隔）, wine was served.
78. The activities of credit companies (信贷公司) are r__________ by law. (受法律约束 )
79. In a recording studio, even when __________ (转发) by microphone, music loses some of its liveliness.
80. She a __________（热爱）working with children.