單項選擇題（）a number of home-made nautical instruments and foreign-made meters on the bridge.
A.Have
B.Has
C.There is
D.There are
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1.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
2.單項選擇題（）behalf of my owners, I give you my formal notice.
A.At
B.On
C.Of
D.In
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