If any part of the product proves to be_____within one year of the date of purchase, it will be repaired free of charge, or repl

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问题 If any part of the product proves to be_____within one year of the date of purchase, it will be repaired free of charge, or replaced if necessary.

选项 A、defective
B、defects
C、defect
D、defectively

答案A

解析 空格前出现了be动词,因此空格处应填入用作补语的形容诃defective.
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