题目内容
根据句意和首字母或汉语提示，将单词的正确形式写在题中相应的横线上。
71. There’s nothing in this box. Look, it’s e______________.
72. You’d better to keep your v______________ down when talking in public.
73. Jack is so smart that he can answer these questions ______________ (容易地) .
74. Both of my best friends were born in ______________ (十月) .
75. People will use robots to do the ______________ (家务) in the future.
71. empty 72. voice 73. easily 74. October 75. housework
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