2. 外语
  3. Although he was under no obligation the shopkeeper replaced the defective battery free of charge.

Although he was under no obligation the shopkeeper replaced the defective battery free of charge.

admin2012-12-22  32
问题 Although he was under no obligation the shopkeeper replaced the defective battery free of charge.
选项 A、guarantee
B、duty
C、power
D、authority
答案B
解析 to be under obligation“有责任，有义务”。选项中只有B．duty有“责任”之意，与之意思相近。guarantee“保证”；power“能力”；authority“权威，权力”。
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