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單項(xiàng)選擇題

It has something （） with poor workmanship and assembly, doesn’t it?

A.do
B.to do
C.done
D.doing

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單項(xiàng)選擇題

The certificate for the refrigerating plant will（）soonI’d like to extend its validation now.

A.update
B.finish
C.outdated
D.expire

單項(xiàng)選擇題

（）, remedies must be taken to stop it as early as possible.

A.Any surge occurs
B.Any surge occurred
C.Should any surge occur
D.Should any surge occurring

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