單項選擇題The quartermasters（）steer the ship and help the officer keep lookout.

A.duty
B.on duty
C.at duty
D.in duty


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1.單項選擇題The captain is in（）command of the ship.

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

2.單項選擇題The officer of the watch（）a good lookout on the bridge.

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

3.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

4.單項選擇題Smith always（）a lot of things to do during the voyage.

A.has
B.have
C.there is
D.there are

5.單項選擇題On the forecastle deck,the chief officer and the bosun（）sharp lookout.

A.to keep
B.are keep
C.is keeping
D.are keeping