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單項選擇題

The captain is in（）command of the ship.

A.overall
B.over
C.all
D.task

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The officer of the watch（）a good lookout on the bridge.

A.keep
B.keeping
C.keeps
D.is keeping

單項選擇題

In the afternoon he often removes rust or（）some paint work.

A.do
B.did
C.does
D.to do

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