题目内容
There's an important meeting for my parents to attend in another city, so they'll be ________ for several days.
A. on leave B. on duty C. on show D. on business
D 【解析】句意:我父母要去另一个城市参加一个重要的会议,所以他们要出差几天。A. on leave休假;B. on duty值班;C. on show展览;D. on business出差。根据前面There's an important meeting for my parents to attend in another city,可知,此处是说要“出差”几天;结合选项,可知D选项符合...
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