The mobile phone was for at least five years against the bug, but it was wrong only one year l——青夏教育精英家教网—

题目内容

The mobile phone was _____ for at least five years against the bug, but it was wrong only one year later.

A. ensured
B. guaranteed
C. protected
D. promised

试题答案

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The mobile phone was ______ for at least five years against the bug，but it went wrong only one year later．

A．recommended B．guaranteed C．protected D．promised

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