單項選擇題

（）about 20 sq.m to be sand-blasted.

A.The rusting area
B.The rusted area
C.The corroded area
D.The corrosive area

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單項選擇題

（）behalf of my owners, I give you my formal notice.

A.At
B.On
C.Of
D.In

單項選擇題

（）fear of the damages and losses, I hereby note my protest.

A.To
B.Against
C.For
D.With